4.sup.G -alpha-D-glucopyranosyl rutin, and its preparation and u

Details 4.sup.G -alpha-D-glucopyranosyl rutin, and its preparation and u 4.sup.G -alpha-D-glucopyranosyl rutin, and its preparation and u

1990-03-07

1991-06-25

Page, Thurman

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

536 8, C07H 1524, C07H 1500

Patent

active

050268333

ABSTRACT:
A novel glycoside, 4.sup.G -alpha-D-glucopyranosyl rutin, is formed by a saccharide-transferring enzyme and glucoamylase in a solution which contains rutin together with glucoamylase. The 4.sup.G -alpha-D-glucopyranosyl rutin formed in such a solution is purified with a synthetic macroreticular resin, and crystallization in an organic solvent yields a complex crystal with the organic solvent. 4.sup.G -Alpha-D-glucopyranosyl rutin exhibits the same molecular absorption coefficient as intact rutin, and is readily water-soluble, substantially tasteless and odorless, and readily hydrolyzable in vivo to exhibit physiological activities inherent to rutin. These render 4.sup.G -alpha-D-glucopyranosyl rutin very useful as a highly-safe, natural yellow coloring agent, antioxidant, stabilizer, quality-improving agent, preventive, remedy, uv-absorbent and deterioration-preventing agent in foods, beverages, tobaccos, cigarets, feeds, pet foods, pharmaceuticals, cosmetics and plastics.

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