What is "psicose"

n. (context carbohydrate English) The monosaccharide ''(3R,4R,5R)-1,3,4,5,6-pentahydroxyhexan-2-one'' that is an epimer of fructose

D-Psicose (D-allulose, D-ribo-2-hexulose, CHO) is a low-energy monosaccharide sugar present in small quantities in natural products. First identified in wheat more than 70 years ago, psicose is a C-3 epimer of D- fructose, and is present in small quantities in agricultural products and commercially prepared carbohydrate complexes. The sweetness of psicose is 70% of the sweetness of sucrose, and health benefits of psicose may include improved insulin resistance, antioxidant enhancement and formation, and hypoglycemic controls.