What is allulose?
Allulose, also called D-allulose or D-psicose, is a rare sugar that occurs naturally in small amounts in foods such as figs, raisins, wheat, and maple syrup. Chemically, it is a monosaccharide and a C-3 epimer of fructose, which means it has the same molecular formula as fructose but a different three-dimensional arrangement at one carbon atom.
That small structural difference changes how the body handles it. Allulose tastes and behaves much more like sugar than many high-intensity sweeteners, but most of the allulose a person consumes is not metabolized for energy in the same way as sucrose. This is why it is used in reduced-sugar foods, keto-friendly formulations, beverages, bakery products, dairy systems, and confectionery.
Searchers also ask about allulose chemical structure and allulose molecular structure. The simplest answer is that allulose is a rare sugar with a specific arrangement of atoms that makes it taste like sugar while behaving differently in metabolism and label treatment.
- Key point: Common names: allulose, D-allulose, D-psicose.
- Key point: Sweetness: about 70% of sucrose.
- Key point: Energy value used for U.S. labeling: 0.4 kcal/g under FDA enforcement discretion.
- Key point: Food roles: sweetening, browning, mouthfeel, freezing-point control, and sugar reduction.
- Key point: Structure queries: allulose chemical structure, allulose molecular structure.