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Studies on Tamarind Kernel Polysaccharides. Part II . Fractionation and Examination of Minor Component Polysaccharides
Author(s) -
Srivastava H. C.,
Krishnamurthy T. N.
Publication year - 1972
Publication title -
starch ‐ stärke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.62
H-Index - 82
eISSN - 1521-379X
pISSN - 0038-9056
DOI - 10.1002/star.19720241105
Subject(s) - xylose , arabinose , polysaccharide , fractionation , mole , chemistry , hydrolysis , mole fraction , fraction (chemistry) , aqueous solution , chromatography , organic chemistry , fermentation
Tamarind kernel powder has been fractionated by aqueous extraction and by complexing with copper to afford three fractions I—III. Fraction I contains sizable amounts of proteinous matter whereas fractions II and III are almost pure polysaccharides. Methylation of fraction III followed by hydrolysis produces 2,3,5‐tri‐O‐methyl‐ L ‐arabinose (1 mole); 2,3,4‐tri‐O‐methyl‐ D ‐xylose (1 mole); 2,3,4,6‐tetra‐O‐methyl‐ D ‐galactose (1 mole); 2,3,6‐tri‐O‐methyl‐ D ‐glucose (1 mole); 3,4‐di‐O‐methyl‐ D ‐xylose (1 mole); and 2,3‐di‐O‐methyl‐ D ‐glucose (3 moles). The structure of the polysaccharides is discussed in the light of the above results.