Properties of Three rare Sugars D-psicose, D-allose, D-tagatose and Their Applications

IIDA Tetsuo, OKUMA  Kazuhiro

doi:10.5650/oleoscience.13.435

Rare sugars are monosaccharides and their derivatives those rarely exist in nature, de fined by International Society of Rare Sugars. Recently enzymatic mass production of these sugars was established. D-glucose and D-fructose are abundant in nature and act as energy source, whereas rare sugars are not easily metabolized in the living organisms, but possess beneficial effects. In this report, we dealt with rare sugars such as D-psicose, D-allose, and D-tagatose, those have been well-studied so far. D-psicose is a zero calorie sweetener and has approximately 70% sweetness to sucrose. D-psicose suppresses the postprandial blood glucose elevation by α-glucosidase inhibition and facilitating gluco kinase translocation. D-psicose also reduces the abdominal fat accumulation through the suppression of lipogenic enzymes in liver. D-allose has approximately 80% sweetness to sucrose and gives energy value close to zero. D-allose suppresses the generation of reactive oxygen species and regulates the redox states in various cell lines, led to the suppression of elevating blood pressure, ischemia-reperfu sion injury, and cancer cell proliferations. D-tagatose has approximately 90% sweetness to sucrose and gives energy value close to 2 kcal/g. D-tagatose increases HDL cholesterol levels and suppresses the postprandial blood glucose elevation through the same mechanism as D-psicose.

Properties of Three rare Sugars D-psicose, D-allose, D-tagatose and Their Applications

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