title: Amyloglucosidase-catalyzed synthesis of eugenyl and curcuminyl glycosides.
abstract: Glycosylation of the phenolic hydroxyl group of the phenyl propanoid systems, eugenol 1 and curcumin 2, using an amyloglucosidase from Rhizopus and a beta-glucosidase from sweet almonds together with carbohydrates (D-glucose 3, D-mannose 4, maltose 5, sucrose 6 and D-mannitol 7) in di-isopropyl ether produced glycosides at 7-52% yields in 72 h. Spectral studies indicated that the reaction occurred between the phenolic OH groups and C-1 and/or 6-O-groups of the carbohydrates with curcumin exhibiting bis glycosylation.
authors.affiliation: Fermentation Technology and Bioengineering, Central Food Technological Research Institute, Mysore, India.
authors.forename: Giriyapura R
authors.initials: GR
authors.lastname: Vijayakumar
authors.forename: Soundar
authors.initials: S
authors.lastname: Divakar
mesh_terms: D002241:Carbohydrates / Q000737:chemistry*; D002384:Catalysis; D003474:Curcumin / Q000737:chemistry*; D005054:Eugenol / Q000737:chemistry*; D005087:Glucan 1,4-alpha-Glucosidase / Q000737:chemistry*; D027861:Prunus / Q000201:enzymology*; D012233:Rhizopus / Q000201:enzymology*; D001617:beta-Glucosidase / Q000737:chemistry*
chemical_list: D002241:Carbohydrates; D005054:Eugenol; D001617:beta-Glucosidase; D005087:Glucan 1,4-alpha-Glucosidase; D003474:Curcumin