Faced with the global health crisis caused by high sugar, global sugar control has become a major trend, and low calorie, high safety functional sweeteners have become the focus of the food industry and health field. L-Arabinose and D-Allulose, as representatives of natural rare sugars, stand out with their unique metabolic characteristics and health value.
I. Basic introduction.
L-Arabinose belongs to the category of five carbon aldoses, with a molecular formula of C₅H₁₀O₅. It is a pentose substance that naturally exists in the cell walls of fruits, vegetables, and grains. Industrial production often extracts it from agricultural and forestry waste such as corn cobs and sugarcane bagasse, with a purity of over 99.5%.
D-Allulose belongs to the six carbon ketose family, with the molecular formula C₆H₁₂O₆. It is a differential isomer of D-fructose and naturally exists in trace amounts in dried fruits and fungi. In industry, it is mainly prepared by isomerization of fructose.
II. Physical and chemical properties.
| Properties | L-Arabinose | D-Allulose |
| Appearance | White or off white crystalline light powder | white crystalline particle |
| Category | pentose (C) | hexose (C) |
| Sweetness(Compared to sucrose) | 50%-60% | around 70% |
| Taste | Pure sweetness, soft sweetness | Pure and odorless |
| Melting point | 154-158℃ | 109℃ |
| Calorie | ≈0.2kcal/g | ≈0.4kcal/g |
| Classification | New food ingredients | New food ingredients |
| Stability | High temperature resistance, acid and alkali stability, highly prone to Maillard reaction | Heat resistant, acid resistant, and prone to Maillard reaction |
| Scope of use | All types of food, excluding infant and toddler food | Not suitable for infants, pregnant women, and lactating women; Recommended dosage ≤ 20g/day |
III. Metabolic principles.
L-arabinose and D-Allulose are difficult for the human body to break down and provide energy, but they differ in their metabolic absorption, distribution, and excretion characteristics.
Arabinose is rarely absorbed and is mainly excreted in its original form through urine; Most of Allulose can be rapidly absorbed and briefly distributed in various organ tissues, and then quickly excreted through the intestine and kidneys. The transport and metabolic pathways of the two are different in the body, which is closely related to their physiological characteristics as functional low calorie sweeteners.
IV. Functional characteristics.
1. L-arabinose: It mainly inhibits sucrose absorption, stabilizes blood sugar, and regulates intestinal health.
The most representative physiological function of L-arabinose is to selectively affect sucrase in the small intestine, thereby inhibiting the absorption of sucrose. Meanwhile, L-arabinose can effectively proliferate beneficial bacteria in the intestine, maintain the balance of the body’s microbiota, enhance immune function, and promote human health. In addition, there have been related research reports on the physiological activities of L-arabinose in protecting the liver, altering the composition of skeletal muscle fibers, antioxidation, and anti-inflammatory effects.
2. D-Allulose: Targeted inhibition of monosaccharide absorption, improvement of insulin resistance, and regulation of lipid metabolism.
In addition to being a sweetener, clinical and animal experiments have shown that D-Allulose also has a variety of physiological functions, such as anti hyperglycemia and lipid, antioxidant, anti-inflammatory and anti atherosclerosis.
The anti diabetes function of D-Allulose is one of the most fully studied physiological functions by regulating blood sugar and improving insulin resistance.
In addition, D-allulose can inhibit lipid accumulation by promoting fat breakdown, thereby alleviating various metabolic disorders and reducing levels of pro-inflammatory adipokines and cytokines in plasma.
V. Application areas.
L-arabinose is currently the inhibitor with the highest inhibition rate that selectively inhibits sucrase and delays the digestion of sucrose. Leveraging its core advantage of inhibiting sucrose absorption, L-arabinose is widely used in fields such as inhibiting sucrose absorption, blood glucose management, and weight management, including high sugar products such as milk tea, sugary drinks, and Chinese pastries. When used in combination with sucrose, it reduces the actual sugar intake of the human body and is a food with the main function of reducing sugar and controlling sugar; And in weight management meal replacements, protein powders, and hypoglycemic health foods.
D-Allulose is a universal sugar substitute, which can be used as a 1:1 replacement for sucrose. At present, it is mainly used in baked Dim sum, ice cream, carbonated drinks, sugar free candy, health care products and other kinds of food.
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