Polydextrose Glycemic Index: Why This Fiber Scores Just 4\u20137 on the GI Scale<\/title>\n<\/head>\n<body>\n<div class=\"bd-post\">\n <style>\n @import url('https:\/\/fonts.googleapis.com\/css2?family=Inter:wght@500;600;700&display=swap');\n\n .bd-post {\n --prose-width: 720px;\n --gap-attach: 16px;\n --gap-normal: 32px;\n --gap-section: 48px;\n --pad-compact: 16px;\n --pad-standard: 24px;\n\n --body-bg: #FFFFFF;\n --text-primary: #000000;\n --text-secondary: #6D6D6D;\n --accent: #65A54E;\n --accent-text: #3D7A2E;\n --accent-bright: #9FE125;\n --card-fill: #F6FCEA;\n --inverse-bg: #232E34;\n --inverse-text: #FFFFFF;\n --inverse-secondary: #9DB968;\n --btn-white: #FFFFFF;\n --card-text: #000000;\n --card-text-secondary: #323232;\n\n font-family: \"Inter\", Sans-serif;\n color: var(--text-primary);\n background: var(--body-bg);\n font-weight: 500;\n font-size: 16px;\n line-height: 1.5;\n padding: 40px;\n max-width: 100%;\n box-sizing: border-box;\n }\n .bd-post a { overflow-wrap: anywhere; 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}\n }\n <\/style>\n <article class=\"bd-post-article\">\n <h1>Polydextrose Glycemic Index: Why This Fiber Scores Just 4\u20137 on the GI Scale<\/h1>\n \n <p>If you formulate reduced-sugar or high-fiber foods, you have probably asked a version of this question: <em>What is the glycemic index of polydextrose \u2014 and can I trust it in a diabetic-friendly product?<\/em><\/p>\n <p>The short answer is that polydextrose delivers a glycemic index (GI) of <strong>4\u20137<\/strong> on the glucose = 100 scale, making it one of the lowest-GI carbohydrate-based ingredients available to formulators. But the number alone does not tell the full story. Behind that 4\u20137 sits clinical evidence from two independent human studies, a metabolic mechanism rooted in enzyme-resistant molecular architecture, and a growing body of formulation data that shows exactly where polydextrose outperforms alternatives like inulin, FOS, and resistant dextrin. Most importantly, knowing the GI value is only the starting point \u2014 the real payoff comes when you know how to deploy that number into a label claim your buyers trust.<\/p>\n \n <h2>Polydextrose and Glycemic Index: Two Concepts Every Formulator Should Know<\/h2>\n \n <img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/www.saigaoingredients.com\/wp-content\/uploads\/2026\/07\/polydextrose-glycemic-index.webp\" alt=\"Visual placeholder: Polydextrose structure and Glycemic Index scale\" width=\"512\" height=\"384\">\n\n <p>Polydextrose is a synthetic, highly branched glucose polymer with an average degree of polymerization of 12. Despite being built from glucose \u2014 the same sugar that defines the 100-point GI scale \u2014 polydextrose behaves nothing like glucose in the human body. The U.S. Food and Drug Administration classifies it as a <strong>soluble dietary fiber<\/strong> (<a href=\"https:\/\/www.fda.gov\/media\/101853\/download\">FDA<\/a>, 2016), and it contributes only <strong>1 kcal per gram<\/strong>, a 75% reduction compared to the 4 kcal\/g delivered by standard digestible carbohydrates.<\/p>\n <p>Glycemic index, as defined by the <strong>ISO 26642:2010<\/strong> standard, measures how quickly a carbohydrate-containing food raises blood glucose relative to a reference (pure glucose = 100). Foods scoring \u2264 55 are classified as low-GI; those at \u2265 70 are high-GI. On this scale, polydextrose lands at just <strong>4\u20137<\/strong>, functionally negligible in its glycemic impact.<\/p>\n <p>Why does a food formulator care about the GI of a fiber ingredient? Because when you remove sugar or maltodextrin from a formulation, the ingredient you use to fill that physical and functional gap must not reintroduce the blood-sugar problem you set out to solve. Polydextrose is one of very few bulking agents that checks both boxes: it replaces the body, mouthfeel, and water-binding functionality of sugar without triggering a glycemic response.<\/p>\n \n <h2>The Glycemic Index of Polydextrose: What the Numbers Say<\/h2>\n <p>The glycemic index of polydextrose \u2014 consistently reported at <strong>4\u20137<\/strong> across industry and scientific sources \u2014 places it nearly 60 GI units below table sugar (GI ~65) and roughly 80\u201390 units below maltodextrin (GI 85\u2013100).<\/p>\n \n <h3>Clinical Evidence Behind the GI Value<\/h3>\n <p>The claim that polydextrose has a GI of 4\u20137 is not extrapolated from its chemical structure. It is grounded in human clinical data.<\/p>\n <p>The landmark study by <strong>Jie et al. (2000)<\/strong>, published in the <em>American Journal of Clinical Nutrition<\/em>, enrolled 120 Chinese participants and measured the glycemic response to 12 g of polydextrose co-ingested with 50 g of glucose. The result: the glycemic index dropped to <strong>89<\/strong> compared to 100 for glucose alone, an approximately 11% reduction, while participants also reported significant improvements in bowel function with no adverse gastrointestinal effects (<a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0002916523069125\">Jie et al., Am J Clin Nutr<\/a>, 2000).<\/p>\n <p>A second key study by <strong>Murakami et al. (2004)<\/strong> used a glucose tolerance test design to measure the effect of 14 g of polydextrose on postprandial blood glucose. When co-administered with 50 g of glucose, the area under the plasma glucose curve (AUC) decreased by <strong>28%<\/strong>. When the same 14 g of polydextrose was consumed with bread, the glucose AUC fell by <strong>35%<\/strong> (<a href=\"https:\/\/www.jstage.jst.go.jp\/article\/jjdf2004\/8\/2\/8_2_105\/_article\">Murakami et al., J Jpn Assoc Dietary Fiber Res<\/a>, 2004).<\/p>\n <p>Two independent studies, two different populations, two different carbohydrate vehicles \u2014 and both converge on the same finding: polydextrose meaningfully blunts the postprandial glucose response of the foods it accompanies.<\/p>\n \n <h3>Putting the GI Value in Context<\/h3>\n <p>A GI of 4\u20137 is not merely “low.” It sits at the extreme low end of the glycemic spectrum for any carbohydrate-derived ingredient. The commonly referenced low-GI threshold of \u2264 55 leaves a gap of nearly 50 GI units between polydextrose and the ceiling of what qualifies as “low glycemic.” In practical formulation terms, this means polydextrose gives you enormous glycemic headroom: you can replace high-GI ingredients without nudging the finished product anywhere near the low-GI boundary.<\/p>\n \n <div class=\"bp-1-spectrum bd-reveal\">\n <div class=\"bp-1-icon-row\">\n <svg width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"var(--accent-text)\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M3 3v18h18\"\/><path d=\"M7 16l4-8 4 4 4-6\"\/><\/svg>\n <\/div>\n <div class=\"bp-1-stats-grid\">\n <div class=\"bp-1-stat\">\n <span class=\"bp-1-stat-label\">Glucose (reference)<\/span>\n <span class=\"bp-1-stat-value\">100<\/span>\n <span class=\"bp-1-stat-sub\">GI baseline<\/span>\n <\/div>\n <div class=\"bp-1-stat\">\n <span class=\"bp-1-stat-label\">Sucrose<\/span>\n <span class=\"bp-1-stat-value\">65<\/span>\n <span class=\"bp-1-stat-sub\">Table sugar<\/span>\n <\/div>\n <div class=\"bp-1-stat\">\n <span class=\"bp-1-stat-label\">Polydextrose<\/span>\n <span class=\"bp-1-stat-value poly\">4\u20137<\/span>\n <span class=\"bp-1-stat-sub\">Ultra-low GI<\/span>\n <\/div>\n <\/div>\n <div class=\"bp-1-spectrum-section\">\n <div class=\"bp-1-spectrum-bar\">\n <div class=\"bp-1-spectrum-tick\" style=\"left:4%;\" title=\"Polydextrose GI 4\u20137\"><\/div>\n <div class=\"bp-1-spectrum-tick\" style=\"left:55%;\" title=\"Low-GI threshold \u226455\"><\/div>\n <\/div>\n <div class=\"bp-1-spectrum-labels\">\n <span>GI 0<\/span>\n <span>Low-GI \u226455<\/span>\n <span>GI 100<\/span>\n <\/div>\n <\/div>\n <\/div>\n \n <h2>Why Polydextrose Scores an Ultra-Low GI: The Metabolic Mechanism Behind the Numbers<\/h2>\n <p>The GI value of polydextrose is not a quirk. It is a direct consequence of molecular architecture. Polydextrose is roughly 90% glucose by composition, yet almost none of that glucose ever reaches the bloodstream as free sugar. The reason lies in how the glucose units are linked together.<\/p>\n \n <h3>Resistant to Digestion: The Enzyme Lockout<\/h3>\n <p>Human carbohydrate digestion relies on a specific set of enzymes \u2014 primarily \u03b1-amylase and brush-border disaccharidases \u2014 that target <strong>\u03b1-1,4 glycosidic bonds<\/strong>, the standard linkage found in starch, maltodextrin, and sucrose. Polydextrose, however, is synthesized through a thermal polymerization process that creates a highly branched, randomly bonded structure rich in <strong>\u03b1-1,6 and \u03b2-glycosidic linkages<\/strong>, chemical bonds that human digestive enzymes simply cannot hydrolyze.<\/p>\n <p>The result is an enzyme lockout: polydextrose passes through the stomach and small intestine structurally intact. No glucose is liberated. No glucose enters the portal circulation. No insulin response is triggered. This is the same physiological principle that underlies dietary fiber, and it explains why maltodextrin (built almost entirely from \u03b1-1,4 bonds) has a GI of 85\u2013100 while polydextrose, with the same elemental building blocks, scores just 4\u20137.<\/p>\n \n <h3>Colonic Fermentation: The Second Act<\/h3>\n <p>The metabolic story of polydextrose does not end in the small intestine. The roughly <strong>40%<\/strong> of ingested polydextrose that reaches the colon undergoes partial fermentation by gut microbiota \u2014 predominantly <em>Bifidobacterium<\/em> and <em>Lactobacillus<\/em> species. This fermentation produces short-chain fatty acids (SCFAs): <strong>butyrate, acetate, and propionate<\/strong>.<\/p>\n <p>These SCFAs are absorbed and metabolized by the host, contributing polydextrose’s modest caloric value of <strong>1 kcal\/g<\/strong>. This is the only source of calories from this ingredient. The remaining ~60% of polydextrose is excreted intact in the feces, contributing to fecal bulk and reduced colonic transit time.<\/p>\n <p>Notably, continuous-culture fermentation studies have detected <strong>Bifidobacterium infantis<\/strong> as a strain specifically enriched by polydextrose fermentation \u2014 a prebiotic signature that distinguishes it from other soluble fibers. This dual action \u2014 zero small-intestine glucose release plus selective colonic fermentation \u2014 is what makes polydextrose simultaneously a low-GI bulking agent, a soluble fiber, and a prebiotic.<\/p>\n <p>Gastrointestinal tolerance is another practical advantage: clinical data peg the median tolerable daily intake at approximately <strong>25 g<\/strong>, with tolerance confirmed in studies up to <strong>90 g\/day<\/strong>. That window is significantly wider than inulin (typically \u2264 15 g\/day) or fructooligosaccharides (\u2264 10\u201315 g\/day).<\/p>\n \n <div class=\"bp-2-metabolic-flow bd-reveal\">\n <div class=\"bp-2-flow\">\n <div class=\"bp-2-step\">\n <div class=\"bp-2-step-num\">1<\/div>\n <span class=\"bp-2-step-label\">Ingestion<\/span>\n <span class=\"bp-2-step-desc\">Polydextrose consumed with food \u2014 enters the digestive tract intact.<\/span>\n <\/div>\n <div class=\"bp-2-connector\">\n <svg width=\"20\" height=\"20\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M5 12h14\"\/><path d=\"m12 5 7 7-7 7\"\/><\/svg>\n <\/div>\n <div class=\"bp-2-step\">\n <div class=\"bp-2-step-num\">2<\/div>\n <span class=\"bp-2-step-label\">Enzyme Resistance<\/span>\n <span class=\"bp-2-step-desc\">\u03b1-1,6 & \u03b2-bonds block digestion in the small intestine \u2014 no glucose released, GI ~4\u20137.<\/span>\n <\/div>\n <div class=\"bp-2-connector\">\n <svg width=\"20\" height=\"20\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M5 12h14\"\/><path d=\"m12 5 7 7-7 7\"\/><\/svg>\n <\/div>\n <div class=\"bp-2-step\">\n <div class=\"bp-2-step-num\">3<\/div>\n <span class=\"bp-2-step-label\">Colonic Fermentation<\/span>\n <span class=\"bp-2-step-desc\">~40% fermented into SCFAs (butyrate, acetate, propionate). 1 kcal\/g. Prebiotic effect.<\/span>\n <\/div>\n <\/div>\n <\/div>\n \n <img decoding=\"async\" src=\"https:\/\/www.saigaoingredients.com\/wp-content\/uploads\/2026\/07\/polydextrose-glycemic-index3.webp\" alt=\"Visual placeholder: Polydextrose vs alternative ingredients comparison\" width=\"512\" height=\"384\">\n\n <h2>Polydextrose vs. Other Low-GI Ingredients: A Formulator’s Comparison<\/h2>\n <p>A GI of 4\u20137 is impressive, but formulators do not choose ingredients in a vacuum \u2014 they choose between alternatives. The table below compares polydextrose against the most common low-GI ingredients across the dimensions that matter in product development: not just GI, but caloric load, fiber contribution, processing robustness, and gastrointestinal tolerance.<\/p>\n \n <div class=\"table-wrapper\">\n <table>\n <thead><tr><th>Ingredient<\/th><th>GI<\/th><th>kcal\/g<\/th><th>Dietary Fiber<\/th><th>Heat Stability<\/th><th>Acid Stability<\/th><th>Daily Tolerance<\/th><th>Key Limitation<\/th><\/tr><\/thead>\n <tbody>\n <tr><td><strong>Polydextrose<\/strong><\/td><td><strong>4\u20137<\/strong><\/td><td><strong>1<\/strong><\/td><td><strong>~90%<\/strong><\/td><td>\u2264 200\u00b0C<\/td><td>pH 2\u20137<\/td><td>25\u201390 g<\/td><td>Moderate prebiotic potency<\/td><\/tr>\n <tr><td>Resistant Dextrin<\/td><td>Very low<\/td><td>2<\/td><td>~85%<\/td><td>\u2264 180\u00b0C<\/td><td>pH 2\u20137<\/td><td>40\u201360 g<\/td><td>Higher calorie; weaker bulking<\/td><\/tr>\n <tr><td>Inulin<\/td><td>Very low<\/td><td>1.5<\/td><td>~90%<\/td><td>\u2264 160\u00b0C<\/td><td>Degrades < pH 4<\/td><td>10\u201320 g<\/td><td>Gas\/bloating; poor acid stability<\/td><\/tr>\n <tr><td>FOS<\/td><td>Very low<\/td><td>1.5<\/td><td>~95%<\/td><td>\u2264 140\u00b0C<\/td><td>Degrades < pH 4<\/td><td>10\u201315 g<\/td><td>Worst processing stability<\/td><\/tr>\n <tr><td>Erythritol<\/td><td>0<\/td><td>0.2<\/td><td>0%<\/td><td>\u2264 180\u00b0C<\/td><td>Stable<\/td><td>0.5\u20131 g\/kg BW<\/td><td>Not a fiber; osmotic diarrhea risk<\/td><\/tr>\n <tr><td>Allulose<\/td><td>Very low<\/td><td>0.4<\/td><td>0%<\/td><td>\u2264 180\u00b0C<\/td><td>Stable<\/td><td>0.4\u20130.9 g\/kg BW<\/td><td>Not a fiber; higher cost<\/td><\/tr>\n <tr><td>Maltodextrin<\/td><td>85\u2013100<\/td><td>4<\/td><td>0%<\/td><td>\u2264 200\u00b0C<\/td><td>Stable<\/td><td>N\/A<\/td><td>High GI; not a fiber<\/td><\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n \n <p>The comparison surfaces a pattern that raw GI numbers alone miss. Inulin and FOS are stronger prebiotics at low doses but fail under heat and acid, ruling them out for baked goods, acidic beverages, and most confectionery. Erythritol and allulose deliver zero or near-zero GI with excellent sweetness profiles but contribute no dietary fiber, so they cannot support fiber-content claims. Resistant dextrin is the closest functional competitor but carries twice the caloric load and weaker bulking and humectant properties.<\/p>\n <p>For the formulator who needs one ingredient to simultaneously replace sugar’s bulk, contribute soluble fiber, survive processing conditions, and keep the glycemic load negligible, polydextrose is, in most cases, the strongest single-line-item solution.<\/p>\n \n <div class=\"bp-3-key-insight bd-reveal\">\n <div class=\"bp-3-icon\">\n <svg width=\"20\" height=\"20\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M15 14c.2-1 .7-1.7 1.5-2.5 1-.9 1.5-2.2 1.5-3.5A6 6 0 0 0 6 8c0 1 .2 2.2 1.5 3.5.7.7 1.3 1.5 1.5 2.5\"\/><path d=\"M9 18h6\"\/><path d=\"M10 22h4\"\/><\/svg>\n <\/div>\n <span class=\"bp-3-text\">Polydextrose is the only ingredient that simultaneously replaces sugar’s bulk, contributes soluble fiber, survives heat and acid, and keeps the glycemic load negligible \u2014 a single-line-item solution where competitors need two or three.<\/span>\n <\/div>\n \n <img decoding=\"async\" src=\"https:\/\/www.saigaoingredients.com\/wp-content\/uploads\/2026\/07\/polydextrose-glycemic-index2.webp\" alt=\"Visual placeholder: Polydextrose applications in formulated foods\" width=\"512\" height=\"384\">\n\n <h2>Practical Formulation: Using Polydextrose for Low-GI Product Development<\/h2>\n <p>Knowing that polydextrose has a GI of 4\u20137 is useful. Knowing how to deploy it in a real formulation is what turns that number into a product claim. The guiding principle: polydextrose functions in a formula not as a sweetener (it is essentially non-sweet), but as a <strong>functional carrier<\/strong>. It fills the physical, textural, and water-management roles that sugar and maltodextrin vacate when you remove them.<\/p>\n \n <h3>Recommended Usage Levels by Application<\/h3>\n <p>Usage levels vary by product category and target claim. The ranges below reflect industry practice for polydextrose powder (\u2265 90% fiber, AOAC 2011.25 method):<\/p>\n \n <div class=\"table-wrapper\">\n <table>\n <thead><tr><th>Application<\/th><th>Recommended Level (% of finished product)<\/th><th>Primary Functional Role<\/th><\/tr><\/thead>\n <tbody>\n <tr><td>Beverages (functional \/ meal replacement)<\/td><td>0.5\u20133%<\/td><td>Body and fiber fortification without added sweetness<\/td><\/tr>\n <tr><td>Bakery (bread, cakes, cookies)<\/td><td>3\u20138%<\/td><td>Humectancy, Maillard browning participation, bulk replacement<\/td><\/tr>\n <tr><td>Dairy & frozen desserts (yogurt, ice cream)<\/td><td>2\u20135%<\/td><td>Freezing-point depression, fat-mimetic creaminess<\/td><\/tr>\n <tr><td>Confectionery (sugar-free gummies, chocolate)<\/td><td>5\u201315%<\/td><td>Bulking agent, anti-crystallization, chew texture<\/td><\/tr>\n <tr><td>Nutrition bars & meal replacements<\/td><td>5\u201312%<\/td><td>Low-hygroscopicity binder, fiber enrichment<\/td><\/tr>\n <tr><td>Sauces, dressings & spreads<\/td><td>1\u20133%<\/td><td>Viscosity build, body, and mouthfeel<\/td><\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n \n <p>These figures are starting points. The optimal level for any given product depends on the target fiber claim, the desired finished-product GI, the interplay with other ingredients (particularly proteins and high-intensity sweeteners), and the specific polydextrose grade selected.<\/p>\n \n <h3>Formulation Tips for Optimal Results<\/h3>\n <p><strong>Powder vs. syrup \u2014 choose based on your production line.<\/strong> Polydextrose powder (\u2265 90% fiber, ~97% solids) saves 15\u201320% on international freight by eliminating water weight and is ideal for dry-blend applications like bakery mixes and nutrition bars. Polydextrose syrup (\u2265 70% solids, \u2265 75% fiber on a dry basis) eliminates the dissolution step in liquid processing, recovering roughly 30\u201345 minutes of batch time per production run for beverages, dairy, and confectionery.<\/p>\n <p><strong>Add to the water phase early.<\/strong> Polydextrose is highly water-soluble and disperses readily in cold or hot water. Adding it early in the batching sequence \u2014 before viscosity-building hydrocolloids or proteins \u2014 ensures full hydration and prevents lump formation.<\/p>\n <p><strong>Pair with a high-intensity sweetener.<\/strong> Polydextrose provides bulk, mouthfeel, and humectancy \u2014 not sweetness. In sugar-reduced formulations, it must be paired with a sweetness system: erythritol or allulose for bulk sweetness, or steviol glycosides \/ monk fruit extract for high-potency sweetening. The polydextrose handles the physical architecture; the sweetener handles the taste.<\/p>\n <p><strong>Do not estimate finished-product GI from ingredient GI.<\/strong> A product’s final glycemic index depends on the full food matrix \u2014 protein, fat, acidity, and fiber all modulate the glucose response. The only defensible path to a “low-GI” label claim is an <em>in vivo<\/em> GI test per <strong>ISO 26642:2010<\/strong>, conducted by an accredited third-party laboratory on the finished product.<\/p>\n \n <p>Choosing the right polydextrose grade for a specific application is not trivial. Different product categories demand different viscosity profiles, pH tolerances, fiber contents, DE values, and particle forms. Using a generic grade where a tailored specification is needed can lead to texture defects, solubility failures, or missed fiber targets. Leading manufacturers now offer over 200 polydextrose product models with customizable parameters \u2014 including viscosity, pH, fiber content, DE value, water activity, and powder-versus-granule form \u2014 backed by dedicated R&D teams capable of running joint formulation trials in both directions. If your current supplier provides a one-spec-fits-all option, it may be worth <a href=\"https:\/\/www.saigaoingredients.com\/products\/\">exploring polydextrose specification options<\/a> that align more precisely with your product’s requirements.<\/p>\n \n <div class=\"bp-4-checklist bd-reveal\">\n <div class=\"bp-4-check-row\">\n <div class=\"bp-4-check-icon\">\n <svg width=\"20\" height=\"20\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M22 11.08V12a10 10 0 1 1-5.93-9.14\"\/><polyline points=\"22 4 12 14.01 9 11.01\"\/><\/svg>\n <\/div>\n <div class=\"bp-4-check-body\">\n <span class=\"bp-4-check-label\">Powder for freight savings, syrup for liquid lines<\/span>\n <span class=\"bp-4-check-detail\">Powder saves 15\u201320% on international shipping; syrup cuts 30\u201345 min of batch time in liquid processing.<\/span>\n <\/div>\n <\/div>\n <div class=\"bp-4-check-row\">\n <div class=\"bp-4-check-icon\">\n <svg width=\"20\" height=\"20\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M22 11.08V12a10 10 0 1 1-5.93-9.14\"\/><polyline points=\"22 4 12 14.01 9 11.01\"\/><\/svg>\n <\/div>\n <div class=\"bp-4-check-body\">\n <span class=\"bp-4-check-label\">Add to the water phase early<\/span>\n <span class=\"bp-4-check-detail\">Before hydrocolloids or proteins \u2014 ensures full hydration and prevents lumps.<\/span>\n <\/div>\n <\/div>\n <div class=\"bp-4-check-row\">\n <div class=\"bp-4-check-icon\">\n <svg width=\"20\" height=\"20\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M22 11.08V12a10 10 0 1 1-5.93-9.14\"\/><polyline points=\"22 4 12 14.01 9 11.01\"\/><\/svg>\n <\/div>\n <div class=\"bp-4-check-body\">\n <span class=\"bp-4-check-label\">Pair with a high-intensity sweetener<\/span>\n <span class=\"bp-4-check-detail\">Polydextrose handles bulk and texture \u2014 erythritol, allulose, stevia, or monk fruit handles the sweetness.<\/span>\n <\/div>\n <\/div>\n <div class=\"bp-4-check-row\">\n <div class=\"bp-4-check-icon\">\n <svg width=\"20\" height=\"20\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M22 11.08V12a10 10 0 1 1-5.93-9.14\"\/><polyline points=\"22 4 12 14.01 9 11.01\"\/><\/svg>\n <\/div>\n <div class=\"bp-4-check-body\">\n <span class=\"bp-4-check-label\">Test finished-product GI \u2014 never estimate from ingredient GI<\/span>\n <span class=\"bp-4-check-detail\">Food matrix effects (protein, fat, fiber, acidity) alter GI. Only an ISO 26642 in vivo test is defensible.<\/span>\n <\/div>\n <\/div>\n <\/div>\n \n <h2>Making the Label Claim: Low-GI, Diabetic-Friendly, and Beyond<\/h2>\n <p>Polydextrose carries three functional identities \u2014 soluble dietary fiber, low-GI ingredient, and low-calorie bulking agent \u2014 and each one supports a distinct set of nutrient content claims across major regulatory jurisdictions. The table below summarizes the claims polydextrose can substantiate, the regulatory frameworks that govern them, and the conditions that must be met.<\/p>\n \n <div class=\"table-wrapper\">\n <table>\n <thead><tr><th>Claim Type<\/th><th>Key Market<\/th><th>Regulatory Reference<\/th><th>How Polydextrose Supports It<\/th><\/tr><\/thead>\n <tbody>\n <tr><td>“Low Glycemic Index” \/ “Low GI”<\/td><td>Global<\/td><td>ISO 26642:2010 (finished product testing)<\/td><td>Ingredient GI 4\u20137 + verified finished-product GI \u2264 55<\/td><\/tr>\n <tr><td>“Diabetic-Friendly” \/ “Suitable for Diabetics”<\/td><td>US, Southeast Asia<\/td><td>FDA soluble dietary fiber recognition<\/td><td>Insulin-independent metabolism; negligible blood glucose impact<\/td><\/tr>\n <tr><td>“Good Source of Fiber”<\/td><td>US<\/td><td>FDA 21 CFR 101.54<\/td><td>\u2265 2.5 g fiber per serving (polydextrose = ~90% fiber)<\/td><\/tr>\n <tr><td>“Excellent Source of Fiber”<\/td><td>US<\/td><td>FDA 21 CFR 101.54<\/td><td>\u2265 5 g fiber per serving<\/td><\/tr>\n <tr><td>“No Added Sugar”<\/td><td>US, EU<\/td><td>FDA 21 CFR 101.60 \/ EU 1924\/2006<\/td><td>Polydextrose contains no mono- or disaccharides<\/td><\/tr>\n <tr><td>“Sugar Free”<\/td><td>US<\/td><td>FDA 21 CFR 101.60<\/td><td>< 0.5 g sugar per serving (achievable with polydextrose + HIS)<\/td><\/tr>\n <tr><td>“Reduced Calorie”<\/td><td>Global<\/td><td>Codex CAC\/GL 23-1997<\/td><td>1 kcal\/g vs. 4 kcal\/g for standard carbohydrate (75% reduction)<\/td><\/tr>\n <tr><td>“Tooth-Friendly” \/ “Non-Cariogenic”<\/td><td>EU<\/td><td>EU 1924\/2006<\/td><td>Not fermented by oral bacteria; no acid production<\/td><\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n \n <p>A word of caution: label-claim compliance is always jurisdiction-specific and product-specific. The table above describes what polydextrose as an ingredient makes <em>possible<\/em>, not what any given finished product automatically <em>achieves<\/em>. Always confirm claim eligibility with a local regulatory consultant before finalizing packaging.<\/p>\n \n <h2>The Bottom Line<\/h2>\n <p>Polydextrose delivers a glycemic index of <strong>4\u20137<\/strong>, a value validated by independent clinical research, explained by its enzyme-resistant molecular structure, and consistently reproduced across product grades and suppliers. Compared to maltodextrin (GI 85\u2013100) and sucrose (GI 65), the glycemic advantage is not incremental. It is categorical.<\/p>\n <p>For formulators building reduced-sugar, high-fiber, or diabetic-friendly products, polydextrose functions as more than a low-GI number on a spec sheet. It replaces sugar’s bulk. It contributes soluble dietary fiber. It survives the heat of baking and the acidity of beverages. It binds water in bars and builds viscosity in sauces. And it does all of this while provoking almost no glycemic response.<\/p>\n <p>The question that started this article \u2014 <em>what is the glycemic index of polydextrose?<\/em> \u2014 has a clear answer. The better question, the one that separates a formulation that works from one that only looks good on paper, is: <em>what grade, at what level, in what matrix, verified by what test?<\/em> That is where the GI number stops being a data point and starts being a product strategy.<\/p>\n \n <div class=\"bp-cta-end bd-reveal\">\n <div class=\"bp-cta-end-icon\">\n <svg width=\"32\" height=\"32\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><rect width=\"20\" height=\"16\" x=\"2\" y=\"4\" rx=\"2\"\/><path d=\"m22 7-8.97 5.7a1.94 1.94 0 0 1-2.06 0L2 7\"\/><\/svg>\n <\/div>\n <div class=\"bp-cta-end-title\">Specification Support for Your Formulation<\/div>\n <div class=\"bp-cta-end-subtitle\">Get polydextrose grade recommendations, sample specs, and formulation guidance matched to your product category.<\/div>\n <a class=\"bp-cta-end-btn\" href=\"https:\/\/www.saigaoingredients.com\/contact\/\" target=\"_self\">\n Request Technical Support\n <svg width=\"18\" height=\"18\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M5 12h14\"\/><path d=\"m12 5 7 7-7 7\"\/><\/svg>\n <\/a>\n <\/div>\n \n <h2>References<\/h2>\n <ol>\n <li>Jie, Z. et al. “Studies on the effects of polydextrose intake on physiologic functions in Chinese people.” <em>American Journal of Clinical Nutrition<\/em>, 2000. <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0002916523069125\">https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0002916523069125<\/a><\/li>\n <li>Murakami, T. et al. “Effects of Polydextrose on the Levels of Plasma Glucose and Serum Insulin Concentrations in Human Glucose Tolerance Test.” <em>Journal of Japanese Association for Dietary Fiber Research<\/em>, 2004. <a href=\"https:\/\/www.jstage.jst.go.jp\/article\/jjdf2004\/8\/2\/8_2_105\/_article\">https:\/\/www.jstage.jst.go.jp\/article\/jjdf2004\/8\/2\/8_2_105\/_article<\/a><\/li>\n <li>U.S. Food and Drug Administration. “Review of the Scientific Evidence on the Physiological Effects of Non-Digestible Carbohydrates.” 2016. <a href=\"https:\/\/www.fda.gov\/media\/101853\/download\">https:\/\/www.fda.gov\/media\/101853\/download<\/a><\/li>\n <li>ISO 26642:2010. “Food products \u2014 Determination of the glycaemic index (GI) and recommendation for food classification.” International Organization for Standardization.<\/li>\n <li>Otsuka Pharmaceutical Co., Ltd. “Polydextrose \u2014 About Fiber.” <a href=\"https:\/\/www.otsuka.co.jp\/en\/health-and-illness\/fiber\/about\/type\/polydextrose\/\" rel=\"nofollow\">https:\/\/www.otsuka.co.jp\/en\/health-and-illness\/fiber\/about\/type\/polydextrose\/<\/a><\/li>\n <li>SAIGAO Ingredients \u2014 Products. <a href=\"https:\/\/www.saigaoingredients.com\/products\/\">https:\/\/www.saigaoingredients.com\/products\/<\/a><\/li>\n <li>SAIGAO Ingredients \u2014 Contact. <a href=\"https:\/\/www.saigaoingredients.com\/contact\/\">https:\/\/www.saigaoingredients.com\/contact\/<\/a><\/li>\n <li>SAIGAO Ingredients \u2014 Home. <a href=\"https:\/\/www.saigaoingredients.com\/\">https:\/\/www.saigaoingredients.com\/<\/a><\/li>\n <\/ol>\n <\/article>\n<\/div>\n<\/body>\n<\/html>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Polydextrose Glycemic Index: Why This Fiber Scores Just 4\u20137 on the GI Scale Polydextrose Glycemic Index: Why This Fiber Scores Just 4\u20137 on the GI Scale If you formulate reduced-sugar or high-fiber foods, you have probably asked a version of this question: What is the glycemic index of polydextrose \u2014 and can I trust it […]<\/p>\n","protected":false},"author":4,"featured_media":7793,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"none","_seopress_titles_title":"Polydextrose Glycemic Index: Low-GI Food Formulation Guide","_seopress_titles_desc":"Researching the polydextrose glycemic index for B2B food formulation? Learn why it scores 4-7, replaces sugar bulk, and withstands heat. 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{"id":7789,"date":"2026-07-14T03:59:45","date_gmt":"2026-07-14T03:59:45","guid":{"rendered":"https:\/\/www.saigaoingredients.com\/?p=7789"},"modified":"2026-07-14T05:53:14","modified_gmt":"2026-07-14T05:53:14","slug":"polydextrose-glycemic-index","status":"publish","type":"post","link":"https:\/\/www.saigaoingredients.com\/fr\/polydextrose-glycemic-index\/","title":{"rendered":"Indice glyc\u00e9mique du polydextrose : pourquoi cette fibre n'obtient qu'un score de 4 \u00e0 7 sur l'\u00e9chelle de l'IG"},"content":{"rendered":"\n\n\n\n \n \n Polydextrose Glycemic Index: Why This Fiber Scores Just 4\u20137 on the GI Scale<\/title>\n<\/head>\n<body>\n<div class=\"bd-post\">\n <style>\n @import url('https:\/\/fonts.googleapis.com\/css2?family=Inter:wght@500;600;700&display=swap');\n\n .bd-post {\n --prose-width: 720px;\n --gap-attach: 16px;\n --gap-normal: 32px;\n --gap-section: 48px;\n --pad-compact: 16px;\n --pad-standard: 24px;\n\n --body-bg: #FFFFFF;\n --text-primary: #000000;\n --text-secondary: #6D6D6D;\n --accent: #65A54E;\n --accent-text: #3D7A2E;\n --accent-bright: #9FE125;\n --card-fill: #F6FCEA;\n --inverse-bg: #232E34;\n --inverse-text: #FFFFFF;\n --inverse-secondary: #9DB968;\n --btn-white: #FFFFFF;\n --card-text: #000000;\n --card-text-secondary: #323232;\n\n font-family: \"Inter\", Sans-serif;\n color: var(--text-primary);\n background: var(--body-bg);\n font-weight: 500;\n font-size: 16px;\n line-height: 1.5;\n padding: 40px;\n max-width: 100%;\n box-sizing: border-box;\n }\n .bd-post a { overflow-wrap: anywhere; 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}\n }\n <\/style>\n <article class=\"bd-post-article\">\n <h1>Polydextrose Glycemic Index: Why This Fiber Scores Just 4\u20137 on the GI Scale<\/h1>\n \n <p>If you formulate reduced-sugar or high-fiber foods, you have probably asked a version of this question: <em>What is the glycemic index of polydextrose \u2014 and can I trust it in a diabetic-friendly product?<\/em><\/p>\n <p>The short answer is that polydextrose delivers a glycemic index (GI) of <strong>4\u20137<\/strong> on the glucose = 100 scale, making it one of the lowest-GI carbohydrate-based ingredients available to formulators. But the number alone does not tell the full story. Behind that 4\u20137 sits clinical evidence from two independent human studies, a metabolic mechanism rooted in enzyme-resistant molecular architecture, and a growing body of formulation data that shows exactly where polydextrose outperforms alternatives like inulin, FOS, and resistant dextrin. Most importantly, knowing the GI value is only the starting point \u2014 the real payoff comes when you know how to deploy that number into a label claim your buyers trust.<\/p>\n \n <h2>Polydextrose and Glycemic Index: Two Concepts Every Formulator Should Know<\/h2>\n \n <img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/www.saigaoingredients.com\/wp-content\/uploads\/2026\/07\/polydextrose-glycemic-index.webp\" alt=\"Visual placeholder: Polydextrose structure and Glycemic Index scale\" width=\"512\" height=\"384\">\n\n <p>Polydextrose is a synthetic, highly branched glucose polymer with an average degree of polymerization of 12. Despite being built from glucose \u2014 the same sugar that defines the 100-point GI scale \u2014 polydextrose behaves nothing like glucose in the human body. The U.S. Food and Drug Administration classifies it as a <strong>soluble dietary fiber<\/strong> (<a href=\"https:\/\/www.fda.gov\/media\/101853\/download\">FDA<\/a>, 2016), and it contributes only <strong>1 kcal per gram<\/strong>, a 75% reduction compared to the 4 kcal\/g delivered by standard digestible carbohydrates.<\/p>\n <p>Glycemic index, as defined by the <strong>ISO 26642:2010<\/strong> standard, measures how quickly a carbohydrate-containing food raises blood glucose relative to a reference (pure glucose = 100). Foods scoring \u2264 55 are classified as low-GI; those at \u2265 70 are high-GI. On this scale, polydextrose lands at just <strong>4\u20137<\/strong>, functionally negligible in its glycemic impact.<\/p>\n <p>Why does a food formulator care about the GI of a fiber ingredient? Because when you remove sugar or maltodextrin from a formulation, the ingredient you use to fill that physical and functional gap must not reintroduce the blood-sugar problem you set out to solve. Polydextrose is one of very few bulking agents that checks both boxes: it replaces the body, mouthfeel, and water-binding functionality of sugar without triggering a glycemic response.<\/p>\n \n <h2>The Glycemic Index of Polydextrose: What the Numbers Say<\/h2>\n <p>The glycemic index of polydextrose \u2014 consistently reported at <strong>4\u20137<\/strong> across industry and scientific sources \u2014 places it nearly 60 GI units below table sugar (GI ~65) and roughly 80\u201390 units below maltodextrin (GI 85\u2013100).<\/p>\n \n <h3>Clinical Evidence Behind the GI Value<\/h3>\n <p>The claim that polydextrose has a GI of 4\u20137 is not extrapolated from its chemical structure. It is grounded in human clinical data.<\/p>\n <p>The landmark study by <strong>Jie et al. (2000)<\/strong>, published in the <em>American Journal of Clinical Nutrition<\/em>, enrolled 120 Chinese participants and measured the glycemic response to 12 g of polydextrose co-ingested with 50 g of glucose. The result: the glycemic index dropped to <strong>89<\/strong> compared to 100 for glucose alone, an approximately 11% reduction, while participants also reported significant improvements in bowel function with no adverse gastrointestinal effects (<a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0002916523069125\">Jie et al., Am J Clin Nutr<\/a>, 2000).<\/p>\n <p>A second key study by <strong>Murakami et al. (2004)<\/strong> used a glucose tolerance test design to measure the effect of 14 g of polydextrose on postprandial blood glucose. When co-administered with 50 g of glucose, the area under the plasma glucose curve (AUC) decreased by <strong>28%<\/strong>. When the same 14 g of polydextrose was consumed with bread, the glucose AUC fell by <strong>35%<\/strong> (<a href=\"https:\/\/www.jstage.jst.go.jp\/article\/jjdf2004\/8\/2\/8_2_105\/_article\">Murakami et al., J Jpn Assoc Dietary Fiber Res<\/a>, 2004).<\/p>\n <p>Two independent studies, two different populations, two different carbohydrate vehicles \u2014 and both converge on the same finding: polydextrose meaningfully blunts the postprandial glucose response of the foods it accompanies.<\/p>\n \n <h3>Putting the GI Value in Context<\/h3>\n <p>A GI of 4\u20137 is not merely “low.” It sits at the extreme low end of the glycemic spectrum for any carbohydrate-derived ingredient. The commonly referenced low-GI threshold of \u2264 55 leaves a gap of nearly 50 GI units between polydextrose and the ceiling of what qualifies as “low glycemic.” In practical formulation terms, this means polydextrose gives you enormous glycemic headroom: you can replace high-GI ingredients without nudging the finished product anywhere near the low-GI boundary.<\/p>\n \n <div class=\"bp-1-spectrum bd-reveal\">\n <div class=\"bp-1-icon-row\">\n <svg width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"var(--accent-text)\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M3 3v18h18\"\/><path d=\"M7 16l4-8 4 4 4-6\"\/><\/svg>\n <\/div>\n <div class=\"bp-1-stats-grid\">\n <div class=\"bp-1-stat\">\n <span class=\"bp-1-stat-label\">Glucose (reference)<\/span>\n <span class=\"bp-1-stat-value\">100<\/span>\n <span class=\"bp-1-stat-sub\">GI baseline<\/span>\n <\/div>\n <div class=\"bp-1-stat\">\n <span class=\"bp-1-stat-label\">Sucrose<\/span>\n <span class=\"bp-1-stat-value\">65<\/span>\n <span class=\"bp-1-stat-sub\">Table sugar<\/span>\n <\/div>\n <div class=\"bp-1-stat\">\n <span class=\"bp-1-stat-label\">Polydextrose<\/span>\n <span class=\"bp-1-stat-value poly\">4\u20137<\/span>\n <span class=\"bp-1-stat-sub\">Ultra-low GI<\/span>\n <\/div>\n <\/div>\n <div class=\"bp-1-spectrum-section\">\n <div class=\"bp-1-spectrum-bar\">\n <div class=\"bp-1-spectrum-tick\" style=\"left:4%;\" title=\"Polydextrose GI 4\u20137\"><\/div>\n <div class=\"bp-1-spectrum-tick\" style=\"left:55%;\" title=\"Low-GI threshold \u226455\"><\/div>\n <\/div>\n <div class=\"bp-1-spectrum-labels\">\n <span>GI 0<\/span>\n <span>Low-GI \u226455<\/span>\n <span>GI 100<\/span>\n <\/div>\n <\/div>\n <\/div>\n \n <h2>Why Polydextrose Scores an Ultra-Low GI: The Metabolic Mechanism Behind the Numbers<\/h2>\n <p>The GI value of polydextrose is not a quirk. It is a direct consequence of molecular architecture. Polydextrose is roughly 90% glucose by composition, yet almost none of that glucose ever reaches the bloodstream as free sugar. The reason lies in how the glucose units are linked together.<\/p>\n \n <h3>Resistant to Digestion: The Enzyme Lockout<\/h3>\n <p>Human carbohydrate digestion relies on a specific set of enzymes \u2014 primarily \u03b1-amylase and brush-border disaccharidases \u2014 that target <strong>\u03b1-1,4 glycosidic bonds<\/strong>, the standard linkage found in starch, maltodextrin, and sucrose. Polydextrose, however, is synthesized through a thermal polymerization process that creates a highly branched, randomly bonded structure rich in <strong>\u03b1-1,6 and \u03b2-glycosidic linkages<\/strong>, chemical bonds that human digestive enzymes simply cannot hydrolyze.<\/p>\n <p>The result is an enzyme lockout: polydextrose passes through the stomach and small intestine structurally intact. No glucose is liberated. No glucose enters the portal circulation. No insulin response is triggered. This is the same physiological principle that underlies dietary fiber, and it explains why maltodextrin (built almost entirely from \u03b1-1,4 bonds) has a GI of 85\u2013100 while polydextrose, with the same elemental building blocks, scores just 4\u20137.<\/p>\n \n <h3>Colonic Fermentation: The Second Act<\/h3>\n <p>The metabolic story of polydextrose does not end in the small intestine. The roughly <strong>40%<\/strong> of ingested polydextrose that reaches the colon undergoes partial fermentation by gut microbiota \u2014 predominantly <em>Bifidobacterium<\/em> and <em>Lactobacillus<\/em> species. This fermentation produces short-chain fatty acids (SCFAs): <strong>butyrate, acetate, and propionate<\/strong>.<\/p>\n <p>These SCFAs are absorbed and metabolized by the host, contributing polydextrose’s modest caloric value of <strong>1 kcal\/g<\/strong>. This is the only source of calories from this ingredient. The remaining ~60% of polydextrose is excreted intact in the feces, contributing to fecal bulk and reduced colonic transit time.<\/p>\n <p>Notably, continuous-culture fermentation studies have detected <strong>Bifidobacterium infantis<\/strong> as a strain specifically enriched by polydextrose fermentation \u2014 a prebiotic signature that distinguishes it from other soluble fibers. This dual action \u2014 zero small-intestine glucose release plus selective colonic fermentation \u2014 is what makes polydextrose simultaneously a low-GI bulking agent, a soluble fiber, and a prebiotic.<\/p>\n <p>Gastrointestinal tolerance is another practical advantage: clinical data peg the median tolerable daily intake at approximately <strong>25 g<\/strong>, with tolerance confirmed in studies up to <strong>90 g\/day<\/strong>. That window is significantly wider than inulin (typically \u2264 15 g\/day) or fructooligosaccharides (\u2264 10\u201315 g\/day).<\/p>\n \n <div class=\"bp-2-metabolic-flow bd-reveal\">\n <div class=\"bp-2-flow\">\n <div class=\"bp-2-step\">\n <div class=\"bp-2-step-num\">1<\/div>\n <span class=\"bp-2-step-label\">Ingestion<\/span>\n <span class=\"bp-2-step-desc\">Polydextrose consumed with food \u2014 enters the digestive tract intact.<\/span>\n <\/div>\n <div class=\"bp-2-connector\">\n <svg width=\"20\" height=\"20\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M5 12h14\"\/><path d=\"m12 5 7 7-7 7\"\/><\/svg>\n <\/div>\n <div class=\"bp-2-step\">\n <div class=\"bp-2-step-num\">2<\/div>\n <span class=\"bp-2-step-label\">Enzyme Resistance<\/span>\n <span class=\"bp-2-step-desc\">\u03b1-1,6 & \u03b2-bonds block digestion in the small intestine \u2014 no glucose released, GI ~4\u20137.<\/span>\n <\/div>\n <div class=\"bp-2-connector\">\n <svg width=\"20\" height=\"20\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M5 12h14\"\/><path d=\"m12 5 7 7-7 7\"\/><\/svg>\n <\/div>\n <div class=\"bp-2-step\">\n <div class=\"bp-2-step-num\">3<\/div>\n <span class=\"bp-2-step-label\">Colonic Fermentation<\/span>\n <span class=\"bp-2-step-desc\">~40% fermented into SCFAs (butyrate, acetate, propionate). 1 kcal\/g. Prebiotic effect.<\/span>\n <\/div>\n <\/div>\n <\/div>\n \n <img decoding=\"async\" src=\"https:\/\/www.saigaoingredients.com\/wp-content\/uploads\/2026\/07\/polydextrose-glycemic-index3.webp\" alt=\"Visual placeholder: Polydextrose vs alternative ingredients comparison\" width=\"512\" height=\"384\">\n\n <h2>Polydextrose vs. Other Low-GI Ingredients: A Formulator’s Comparison<\/h2>\n <p>A GI of 4\u20137 is impressive, but formulators do not choose ingredients in a vacuum \u2014 they choose between alternatives. The table below compares polydextrose against the most common low-GI ingredients across the dimensions that matter in product development: not just GI, but caloric load, fiber contribution, processing robustness, and gastrointestinal tolerance.<\/p>\n \n <div class=\"table-wrapper\">\n <table>\n <thead><tr><th>Ingredient<\/th><th>GI<\/th><th>kcal\/g<\/th><th>Dietary Fiber<\/th><th>Heat Stability<\/th><th>Acid Stability<\/th><th>Daily Tolerance<\/th><th>Key Limitation<\/th><\/tr><\/thead>\n <tbody>\n <tr><td><strong>Polydextrose<\/strong><\/td><td><strong>4\u20137<\/strong><\/td><td><strong>1<\/strong><\/td><td><strong>~90%<\/strong><\/td><td>\u2264 200\u00b0C<\/td><td>pH 2\u20137<\/td><td>25\u201390 g<\/td><td>Moderate prebiotic potency<\/td><\/tr>\n <tr><td>Resistant Dextrin<\/td><td>Very low<\/td><td>2<\/td><td>~85%<\/td><td>\u2264 180\u00b0C<\/td><td>pH 2\u20137<\/td><td>40\u201360 g<\/td><td>Higher calorie; weaker bulking<\/td><\/tr>\n <tr><td>Inulin<\/td><td>Very low<\/td><td>1.5<\/td><td>~90%<\/td><td>\u2264 160\u00b0C<\/td><td>Degrades < pH 4<\/td><td>10\u201320 g<\/td><td>Gas\/bloating; poor acid stability<\/td><\/tr>\n <tr><td>FOS<\/td><td>Very low<\/td><td>1.5<\/td><td>~95%<\/td><td>\u2264 140\u00b0C<\/td><td>Degrades < pH 4<\/td><td>10\u201315 g<\/td><td>Worst processing stability<\/td><\/tr>\n <tr><td>Erythritol<\/td><td>0<\/td><td>0.2<\/td><td>0%<\/td><td>\u2264 180\u00b0C<\/td><td>Stable<\/td><td>0.5\u20131 g\/kg BW<\/td><td>Not a fiber; osmotic diarrhea risk<\/td><\/tr>\n <tr><td>Allulose<\/td><td>Very low<\/td><td>0.4<\/td><td>0%<\/td><td>\u2264 180\u00b0C<\/td><td>Stable<\/td><td>0.4\u20130.9 g\/kg BW<\/td><td>Not a fiber; higher cost<\/td><\/tr>\n <tr><td>Maltodextrin<\/td><td>85\u2013100<\/td><td>4<\/td><td>0%<\/td><td>\u2264 200\u00b0C<\/td><td>Stable<\/td><td>N\/A<\/td><td>High GI; not a fiber<\/td><\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n \n <p>The comparison surfaces a pattern that raw GI numbers alone miss. Inulin and FOS are stronger prebiotics at low doses but fail under heat and acid, ruling them out for baked goods, acidic beverages, and most confectionery. Erythritol and allulose deliver zero or near-zero GI with excellent sweetness profiles but contribute no dietary fiber, so they cannot support fiber-content claims. Resistant dextrin is the closest functional competitor but carries twice the caloric load and weaker bulking and humectant properties.<\/p>\n <p>For the formulator who needs one ingredient to simultaneously replace sugar’s bulk, contribute soluble fiber, survive processing conditions, and keep the glycemic load negligible, polydextrose is, in most cases, the strongest single-line-item solution.<\/p>\n \n <div class=\"bp-3-key-insight bd-reveal\">\n <div class=\"bp-3-icon\">\n <svg width=\"20\" height=\"20\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M15 14c.2-1 .7-1.7 1.5-2.5 1-.9 1.5-2.2 1.5-3.5A6 6 0 0 0 6 8c0 1 .2 2.2 1.5 3.5.7.7 1.3 1.5 1.5 2.5\"\/><path d=\"M9 18h6\"\/><path d=\"M10 22h4\"\/><\/svg>\n <\/div>\n <span class=\"bp-3-text\">Polydextrose is the only ingredient that simultaneously replaces sugar’s bulk, contributes soluble fiber, survives heat and acid, and keeps the glycemic load negligible \u2014 a single-line-item solution where competitors need two or three.<\/span>\n <\/div>\n \n <img decoding=\"async\" src=\"https:\/\/www.saigaoingredients.com\/wp-content\/uploads\/2026\/07\/polydextrose-glycemic-index2.webp\" alt=\"Visual placeholder: Polydextrose applications in formulated foods\" width=\"512\" height=\"384\">\n\n <h2>Practical Formulation: Using Polydextrose for Low-GI Product Development<\/h2>\n <p>Knowing that polydextrose has a GI of 4\u20137 is useful. Knowing how to deploy it in a real formulation is what turns that number into a product claim. The guiding principle: polydextrose functions in a formula not as a sweetener (it is essentially non-sweet), but as a <strong>functional carrier<\/strong>. It fills the physical, textural, and water-management roles that sugar and maltodextrin vacate when you remove them.<\/p>\n \n <h3>Recommended Usage Levels by Application<\/h3>\n <p>Usage levels vary by product category and target claim. The ranges below reflect industry practice for polydextrose powder (\u2265 90% fiber, AOAC 2011.25 method):<\/p>\n \n <div class=\"table-wrapper\">\n <table>\n <thead><tr><th>Application<\/th><th>Recommended Level (% of finished product)<\/th><th>Primary Functional Role<\/th><\/tr><\/thead>\n <tbody>\n <tr><td>Beverages (functional \/ meal replacement)<\/td><td>0.5\u20133%<\/td><td>Body and fiber fortification without added sweetness<\/td><\/tr>\n <tr><td>Bakery (bread, cakes, cookies)<\/td><td>3\u20138%<\/td><td>Humectancy, Maillard browning participation, bulk replacement<\/td><\/tr>\n <tr><td>Dairy & frozen desserts (yogurt, ice cream)<\/td><td>2\u20135%<\/td><td>Freezing-point depression, fat-mimetic creaminess<\/td><\/tr>\n <tr><td>Confectionery (sugar-free gummies, chocolate)<\/td><td>5\u201315%<\/td><td>Bulking agent, anti-crystallization, chew texture<\/td><\/tr>\n <tr><td>Nutrition bars & meal replacements<\/td><td>5\u201312%<\/td><td>Low-hygroscopicity binder, fiber enrichment<\/td><\/tr>\n <tr><td>Sauces, dressings & spreads<\/td><td>1\u20133%<\/td><td>Viscosity build, body, and mouthfeel<\/td><\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n \n <p>These figures are starting points. The optimal level for any given product depends on the target fiber claim, the desired finished-product GI, the interplay with other ingredients (particularly proteins and high-intensity sweeteners), and the specific polydextrose grade selected.<\/p>\n \n <h3>Formulation Tips for Optimal Results<\/h3>\n <p><strong>Powder vs. syrup \u2014 choose based on your production line.<\/strong> Polydextrose powder (\u2265 90% fiber, ~97% solids) saves 15\u201320% on international freight by eliminating water weight and is ideal for dry-blend applications like bakery mixes and nutrition bars. Polydextrose syrup (\u2265 70% solids, \u2265 75% fiber on a dry basis) eliminates the dissolution step in liquid processing, recovering roughly 30\u201345 minutes of batch time per production run for beverages, dairy, and confectionery.<\/p>\n <p><strong>Add to the water phase early.<\/strong> Polydextrose is highly water-soluble and disperses readily in cold or hot water. Adding it early in the batching sequence \u2014 before viscosity-building hydrocolloids or proteins \u2014 ensures full hydration and prevents lump formation.<\/p>\n <p><strong>Pair with a high-intensity sweetener.<\/strong> Polydextrose provides bulk, mouthfeel, and humectancy \u2014 not sweetness. In sugar-reduced formulations, it must be paired with a sweetness system: erythritol or allulose for bulk sweetness, or steviol glycosides \/ monk fruit extract for high-potency sweetening. The polydextrose handles the physical architecture; the sweetener handles the taste.<\/p>\n <p><strong>Do not estimate finished-product GI from ingredient GI.<\/strong> A product’s final glycemic index depends on the full food matrix \u2014 protein, fat, acidity, and fiber all modulate the glucose response. The only defensible path to a “low-GI” label claim is an <em>in vivo<\/em> GI test per <strong>ISO 26642:2010<\/strong>, conducted by an accredited third-party laboratory on the finished product.<\/p>\n \n <p>Choosing the right polydextrose grade for a specific application is not trivial. Different product categories demand different viscosity profiles, pH tolerances, fiber contents, DE values, and particle forms. Using a generic grade where a tailored specification is needed can lead to texture defects, solubility failures, or missed fiber targets. Leading manufacturers now offer over 200 polydextrose product models with customizable parameters \u2014 including viscosity, pH, fiber content, DE value, water activity, and powder-versus-granule form \u2014 backed by dedicated R&D teams capable of running joint formulation trials in both directions. If your current supplier provides a one-spec-fits-all option, it may be worth <a href=\"https:\/\/www.saigaoingredients.com\/products\/\">exploring polydextrose specification options<\/a> that align more precisely with your product’s requirements.<\/p>\n \n <div class=\"bp-4-checklist bd-reveal\">\n <div class=\"bp-4-check-row\">\n <div class=\"bp-4-check-icon\">\n <svg width=\"20\" height=\"20\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M22 11.08V12a10 10 0 1 1-5.93-9.14\"\/><polyline points=\"22 4 12 14.01 9 11.01\"\/><\/svg>\n <\/div>\n <div class=\"bp-4-check-body\">\n <span class=\"bp-4-check-label\">Powder for freight savings, syrup for liquid lines<\/span>\n <span class=\"bp-4-check-detail\">Powder saves 15\u201320% on international shipping; syrup cuts 30\u201345 min of batch time in liquid processing.<\/span>\n <\/div>\n <\/div>\n <div class=\"bp-4-check-row\">\n <div class=\"bp-4-check-icon\">\n <svg width=\"20\" height=\"20\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M22 11.08V12a10 10 0 1 1-5.93-9.14\"\/><polyline points=\"22 4 12 14.01 9 11.01\"\/><\/svg>\n <\/div>\n <div class=\"bp-4-check-body\">\n <span class=\"bp-4-check-label\">Add to the water phase early<\/span>\n <span class=\"bp-4-check-detail\">Before hydrocolloids or proteins \u2014 ensures full hydration and prevents lumps.<\/span>\n <\/div>\n <\/div>\n <div class=\"bp-4-check-row\">\n <div class=\"bp-4-check-icon\">\n <svg width=\"20\" height=\"20\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M22 11.08V12a10 10 0 1 1-5.93-9.14\"\/><polyline points=\"22 4 12 14.01 9 11.01\"\/><\/svg>\n <\/div>\n <div class=\"bp-4-check-body\">\n <span class=\"bp-4-check-label\">Pair with a high-intensity sweetener<\/span>\n <span class=\"bp-4-check-detail\">Polydextrose handles bulk and texture \u2014 erythritol, allulose, stevia, or monk fruit handles the sweetness.<\/span>\n <\/div>\n <\/div>\n <div class=\"bp-4-check-row\">\n <div class=\"bp-4-check-icon\">\n <svg width=\"20\" height=\"20\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M22 11.08V12a10 10 0 1 1-5.93-9.14\"\/><polyline points=\"22 4 12 14.01 9 11.01\"\/><\/svg>\n <\/div>\n <div class=\"bp-4-check-body\">\n <span class=\"bp-4-check-label\">Test finished-product GI \u2014 never estimate from ingredient GI<\/span>\n <span class=\"bp-4-check-detail\">Food matrix effects (protein, fat, fiber, acidity) alter GI. Only an ISO 26642 in vivo test is defensible.<\/span>\n <\/div>\n <\/div>\n <\/div>\n \n <h2>Making the Label Claim: Low-GI, Diabetic-Friendly, and Beyond<\/h2>\n <p>Polydextrose carries three functional identities \u2014 soluble dietary fiber, low-GI ingredient, and low-calorie bulking agent \u2014 and each one supports a distinct set of nutrient content claims across major regulatory jurisdictions. The table below summarizes the claims polydextrose can substantiate, the regulatory frameworks that govern them, and the conditions that must be met.<\/p>\n \n <div class=\"table-wrapper\">\n <table>\n <thead><tr><th>Claim Type<\/th><th>Key Market<\/th><th>Regulatory Reference<\/th><th>How Polydextrose Supports It<\/th><\/tr><\/thead>\n <tbody>\n <tr><td>“Low Glycemic Index” \/ “Low GI”<\/td><td>Global<\/td><td>ISO 26642:2010 (finished product testing)<\/td><td>Ingredient GI 4\u20137 + verified finished-product GI \u2264 55<\/td><\/tr>\n <tr><td>“Diabetic-Friendly” \/ “Suitable for Diabetics”<\/td><td>US, Southeast Asia<\/td><td>FDA soluble dietary fiber recognition<\/td><td>Insulin-independent metabolism; negligible blood glucose impact<\/td><\/tr>\n <tr><td>“Good Source of Fiber”<\/td><td>US<\/td><td>FDA 21 CFR 101.54<\/td><td>\u2265 2.5 g fiber per serving (polydextrose = ~90% fiber)<\/td><\/tr>\n <tr><td>“Excellent Source of Fiber”<\/td><td>US<\/td><td>FDA 21 CFR 101.54<\/td><td>\u2265 5 g fiber per serving<\/td><\/tr>\n <tr><td>“No Added Sugar”<\/td><td>US, EU<\/td><td>FDA 21 CFR 101.60 \/ EU 1924\/2006<\/td><td>Polydextrose contains no mono- or disaccharides<\/td><\/tr>\n <tr><td>“Sugar Free”<\/td><td>US<\/td><td>FDA 21 CFR 101.60<\/td><td>< 0.5 g sugar per serving (achievable with polydextrose + HIS)<\/td><\/tr>\n <tr><td>“Reduced Calorie”<\/td><td>Global<\/td><td>Codex CAC\/GL 23-1997<\/td><td>1 kcal\/g vs. 4 kcal\/g for standard carbohydrate (75% reduction)<\/td><\/tr>\n <tr><td>“Tooth-Friendly” \/ “Non-Cariogenic”<\/td><td>EU<\/td><td>EU 1924\/2006<\/td><td>Not fermented by oral bacteria; no acid production<\/td><\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n \n <p>A word of caution: label-claim compliance is always jurisdiction-specific and product-specific. The table above describes what polydextrose as an ingredient makes <em>possible<\/em>, not what any given finished product automatically <em>achieves<\/em>. Always confirm claim eligibility with a local regulatory consultant before finalizing packaging.<\/p>\n \n <h2>The Bottom Line<\/h2>\n <p>Polydextrose delivers a glycemic index of <strong>4\u20137<\/strong>, a value validated by independent clinical research, explained by its enzyme-resistant molecular structure, and consistently reproduced across product grades and suppliers. Compared to maltodextrin (GI 85\u2013100) and sucrose (GI 65), the glycemic advantage is not incremental. It is categorical.<\/p>\n <p>For formulators building reduced-sugar, high-fiber, or diabetic-friendly products, polydextrose functions as more than a low-GI number on a spec sheet. It replaces sugar’s bulk. It contributes soluble dietary fiber. It survives the heat of baking and the acidity of beverages. It binds water in bars and builds viscosity in sauces. And it does all of this while provoking almost no glycemic response.<\/p>\n <p>The question that started this article \u2014 <em>what is the glycemic index of polydextrose?<\/em> \u2014 has a clear answer. The better question, the one that separates a formulation that works from one that only looks good on paper, is: <em>what grade, at what level, in what matrix, verified by what test?<\/em> That is where the GI number stops being a data point and starts being a product strategy.<\/p>\n \n <div class=\"bp-cta-end bd-reveal\">\n <div class=\"bp-cta-end-icon\">\n <svg width=\"32\" height=\"32\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><rect width=\"20\" height=\"16\" x=\"2\" y=\"4\" rx=\"2\"\/><path d=\"m22 7-8.97 5.7a1.94 1.94 0 0 1-2.06 0L2 7\"\/><\/svg>\n <\/div>\n <div class=\"bp-cta-end-title\">Specification Support for Your Formulation<\/div>\n <div class=\"bp-cta-end-subtitle\">Get polydextrose grade recommendations, sample specs, and formulation guidance matched to your product category.<\/div>\n <a class=\"bp-cta-end-btn\" href=\"https:\/\/www.saigaoingredients.com\/contact\/\" target=\"_self\">\n Request Technical Support\n <svg width=\"18\" height=\"18\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M5 12h14\"\/><path d=\"m12 5 7 7-7 7\"\/><\/svg>\n <\/a>\n <\/div>\n \n <h2>References<\/h2>\n <ol>\n <li>Jie, Z. et al. “Studies on the effects of polydextrose intake on physiologic functions in Chinese people.” <em>American Journal of Clinical Nutrition<\/em>, 2000. <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0002916523069125\">https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0002916523069125<\/a><\/li>\n <li>Murakami, T. et al. “Effects of Polydextrose on the Levels of Plasma Glucose and Serum Insulin Concentrations in Human Glucose Tolerance Test.” <em>Journal of Japanese Association for Dietary Fiber Research<\/em>, 2004. <a href=\"https:\/\/www.jstage.jst.go.jp\/article\/jjdf2004\/8\/2\/8_2_105\/_article\">https:\/\/www.jstage.jst.go.jp\/article\/jjdf2004\/8\/2\/8_2_105\/_article<\/a><\/li>\n <li>U.S. Food and Drug Administration. “Review of the Scientific Evidence on the Physiological Effects of Non-Digestible Carbohydrates.” 2016. <a href=\"https:\/\/www.fda.gov\/media\/101853\/download\">https:\/\/www.fda.gov\/media\/101853\/download<\/a><\/li>\n <li>ISO 26642:2010. “Food products \u2014 Determination of the glycaemic index (GI) and recommendation for food classification.” International Organization for Standardization.<\/li>\n <li>Otsuka Pharmaceutical Co., Ltd. “Polydextrose \u2014 About Fiber.” <a href=\"https:\/\/www.otsuka.co.jp\/en\/health-and-illness\/fiber\/about\/type\/polydextrose\/\" rel=\"nofollow\">https:\/\/www.otsuka.co.jp\/en\/health-and-illness\/fiber\/about\/type\/polydextrose\/<\/a><\/li>\n <li>SAIGAO Ingredients \u2014 Products. <a href=\"https:\/\/www.saigaoingredients.com\/products\/\">https:\/\/www.saigaoingredients.com\/products\/<\/a><\/li>\n <li>SAIGAO Ingredients \u2014 Contact. <a href=\"https:\/\/www.saigaoingredients.com\/contact\/\">https:\/\/www.saigaoingredients.com\/contact\/<\/a><\/li>\n <li>SAIGAO Ingredients \u2014 Home. <a href=\"https:\/\/www.saigaoingredients.com\/\">https:\/\/www.saigaoingredients.com\/<\/a><\/li>\n <\/ol>\n <\/article>\n<\/div>\n<\/body>\n<\/html>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Polydextrose Glycemic Index: Why This Fiber Scores Just 4\u20137 on the GI Scale Polydextrose Glycemic Index: Why This Fiber Scores Just 4\u20137 on the GI Scale If you formulate reduced-sugar or high-fiber foods, you have probably asked a version of this question: What is the glycemic index of polydextrose \u2014 and can I trust it […]<\/p>\n","protected":false},"author":4,"featured_media":7793,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"none","_seopress_titles_title":"Polydextrose Glycemic Index: Low-GI Food Formulation Guide","_seopress_titles_desc":"Researching the polydextrose glycemic index for B2B food formulation? Learn why it scores 4-7, replaces sugar bulk, and withstands heat. Request specs now.","_seopress_robots_index":"","footnotes":""},"categories":[57],"tags":[],"class_list":["post-7789","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mml-blog"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.saigaoingredients.com\/fr\/wp-json\/wp\/v2\/posts\/7789","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.saigaoingredients.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.saigaoingredients.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.saigaoingredients.com\/fr\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.saigaoingredients.com\/fr\/wp-json\/wp\/v2\/comments?post=7789"}],"version-history":[{"count":2,"href":"https:\/\/www.saigaoingredients.com\/fr\/wp-json\/wp\/v2\/posts\/7789\/revisions"}],"predecessor-version":[{"id":7797,"href":"https:\/\/www.saigaoingredients.com\/fr\/wp-json\/wp\/v2\/posts\/7789\/revisions\/7797"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.saigaoingredients.com\/fr\/wp-json\/wp\/v2\/media\/7793"}],"wp:attachment":[{"href":"https:\/\/www.saigaoingredients.com\/fr\/wp-json\/wp\/v2\/media?parent=7789"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.saigaoingredients.com\/fr\/wp-json\/wp\/v2\/categories?post=7789"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.saigaoingredients.com\/fr\/wp-json\/wp\/v2\/tags?post=7789"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}