Allulose (D-Psicose – Rare Sugar)
Introduction
Allulose (D-Psicose; CAS No. 551-68-8; Molecular Formula: C6H12O6; Molecular Weight: 180.16 g/mol) is a rare monosaccharide, classified as a C-3 epimer of D-fructose. It occurs naturally in trace amounts in foods such as figs, raisins, maple syrup, wheat, and molasses. Due to its extremely low natural abundance (<0.4% in most sources), commercial production is achieved through enzymatic epimerization of fructose—commonly derived from corn or beet sugar—using D-tagatose 3-epimerase.
This ingredient appears as a white crystalline powder with a melting point of ~58 °C, offering clean, sucrose-like sweetness at ~70% of sugar’s sweetness intensity. It matches sucrose in bulk, mouthfeel, and browning capability, and is highly soluble in water (~79 g/100 mL at 25 °C), making it suitable for both liquid and dry formulations.
Metabolically, about 70% of ingested Allulose is absorbed in the small intestine and excreted unchanged in urine, while the remainder undergoes limited fermentation in the large intestine. This metabolic pathway results in an energy value of ~0.4 kcal/g—around 10% of the calories of sucrose—alongside negligible effects on blood glucose and insulin levels.
Technical Profile
|
Parameter |
Typical Value |
Significance |
|
Purity |
≥98% |
Food-grade specification |
|
Sweetness |
~70% of sucrose |
Closely mimics sugar taste |
|
Caloric Value |
~0.4 kcal/g |
Low-energy sweetener |
|
Melting Point |
~58 °C |
Processing temperature reference |
|
Water Solubility |
~79 g/100 mL @ 25 °C |
Excellent in beverage and syrup bases |
|
Glycemic Index |
~0 |
Suitable for diabetic and keto diets |
|
Regulatory Status |
FDA GRAS (US); approved in Japan & South Korea |
Expanding market adoption |
With its near-sugar sensory profile, ultra-low caloric content, and tooth-friendly nature, Allulose is a next-generation sweetener ideal for reduced-calorie, sugar-free, and diabetic-friendly formulations. The global Allulose market is projected to grow at a CAGR of 7–9% over the next five years, driven by the clean-label and low-glycemic trends in food and beverage innovation.
Benefits
✔ Low-Calorie Sweetening – Provides ~90% fewer calories than sucrose while delivering similar taste and texture.
✓ Blood Sugar Stability – Does not cause significant increases in blood glucose or insulin.
✓ Excellent Functional Properties – Performs like sugar in baking, freezing point depression, and browning reactions.
✓ Dental-Friendly – Non-cariogenic, does not contribute to tooth decay.
✓ Clean-Label Ingredient – Naturally occurring rare sugar with growing regulatory approvals.
Applications
Bakery & Confectionery: Cookies, cakes, candies requiring sugar-like bulk and browning
Beverages: Low-calorie soft drinks, flavored waters, meal-replacement shakes
Frozen Desserts: Ice creams, sorbets, frozen yogurts with smooth mouthfeel
Nutritional Products: Protein bars, meal replacements, keto snacks
Sauces & Syrups: Low-sugar condiments, dessert toppings
Product Processing
