초록 ▼

Alpha-glycosyl rutin is formed at a high concentration by allowing a saccharide-transferring enzyme to act on a high-rutin content liquid in suspension or solution to effect saccharide-transfer reaction. The resultant alpha-glycosyl rutin is easily recovered from the reaction mixture by allowing it

Alpha-glycosyl rutin is formed at a high concentration by allowing a saccharide-transferring enzyme to act on a high-rutin content liquid in suspension or solution to effect saccharide-transfer reaction. The resultant alpha-glycosyl rutin is easily recovered from the reaction mixture by allowing it to contact with a synthetic macroreticular resin. Alpha-glycosyl rutin is superior in water-solubility, resistance to light and stability to intact rutin, as well as having the physiological activities as intact rutin has. Thus, alpha-glycosyl rutin is favorably usable as a yellow coloring agent, antioxidant, stabilizer, fading-preventing agent, quality-improving agent, preventive, remedy, uv-absorbent and deterioration-preventing agent in foods, beverages, tobaccos, cigarettes, feeds, pet foods, pharmaceuticals for susceptive diseases, cosmetics including skin-refining agent and skin-whitening agent, and plastics, in addition to the use in vitamin P-enriching agents.

대표청구항 ▼

In the method of preparing alpha-glycosyl rutin by allowing a saccharide-transferring enzyme to act on a liquid which contains rutin together with an amylaceous substance, said enzyme being capable of transferring equimolar or more glucose residues from the amylaceous substance to the rutin, under c

In the method of preparing alpha-glycosyl rutin by allowing a saccharide-transferring enzyme to act on a liquid which contains rutin together with an amylaceous substance, said enzyme being capable of transferring equimolar or more glucose residues from the amylaceous substance to the rutin, under conditions sufficient to form alpha-glycosyl rutin, and then recovering the alpha-glycosyl rutin, the improvement wherein: said liquid containing rutin and amylaceous substance includes at least about 0.5 w/v % rutin.