title: Hydrolytic fragmentation of seed gums under microwave irradiation.
abstract: The seed gum solutions of Ipomoea purga, Ipomoea palmata, Ipomoea dasysperma, Cyanaposis tetragonolobus (Guar gum) and Crotolaria medicaginea were microwave (MW) irradiated and their degradation to oligo and monosaccharides was investigated. The gum solutions were fragmented into oligosaccharides/constituent monosaccharides depending upon the length of MW exposure in presence of catalytic amount of mineral acid or even when no acid was used. A mechanism for the microwave induced hydrolytic degradation of the seed gums has been proposed. The MW exposure time required for the partial and complete degradation of the gums was found dependent on the types of the linkages and degree of the branching present in the gums.
authors.affiliation: Department of Chemistry, University of Allahabad, Allahabad 211002, India. vndsng@yahoo.com
authors.forename: V
authors.initials: V
authors.lastname: Singh
authors.forename: A
authors.initials: A
authors.lastname: Tiwari
mesh_terms: D000143:Acids; D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D002384:Catalysis / Q000528:radiation effects; D005690:Galactose; D006027:Glycosides / Q000737:chemistry; D006868:Hydrolysis / Q000528:radiation effects; D008358:Mannose; D008872:Microwaves; D008969:Molecular Sequence Data; D053149:Plant Gums / Q000737:chemistry / Q000302:isolation & purification / Q000528:radiation effects*; D012639:Seeds / Q000737:chemistry* / Q000528:radiation effects*; D012996:Solutions
chemical_list: D000143:Acids; D006027:Glycosides; D053149:Plant Gums; D012996:Solutions; D008358:Mannose; D005690:Galactose