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Carbohydrate Composition of Winged Bean ( Psophocarpus tetragonolobus )
Author(s) -
SAJJAN S. UMADEVI,
WANKHEDE D. B.
Publication year - 1981
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1981.tb04920.x
Subject(s) - raffinose , stachyose , xylose , monosaccharide , arabinose , chemistry , hemicellulose , sucrose , food science , carbohydrate , fructose , starch , sugar , botany , biochemistry , fermentation , biology , hydrolysis
The carbohydrate composition of winged bean has been studied. The seeds contain about 42.2% total carbohydrates of which starch alone accounts for 36.2%. The total monosaccharides constituted 2.7% and were identified as glucose (1.17%) and fructose (1.5%); oligosaccharides amounted to only 0.61% and were identified as sucrose, raffinose, stachyose, and verbascose, on a dry defatted basis. The cold water soluble gum of winged bean contains glucose and xylose as the major sugars together with a small amount of arabinose while hot water soluble gum was found to be a glucantype polymer. Hemicellulose A consisted of glucose, xylose, and arabinose (15.5:9:1) whereas hemicellulose B consisted exclusively of glucose indicating that it is also a glucan‐type polymer.