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Carboxymethylation of Cassia occidentalis seed gum
Author(s) -
Gupta Sarika,
Sharma Pradeep,
Soni P. L.
Publication year - 2004
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.20958
Subject(s) - cassia , galactomannan , sodium hydroxide , chemistry , materials science , organic chemistry , polysaccharide , medicine , alternative medicine , pathology , traditional chinese medicine
The seeds of Cassia occidentalis , an annual weed occurring throughout India, are a rich source of galactomannan gum. The gum derived from seed endosperm can be utilized in a number of industries to replace conventional gums. With a view to utilize the gum for broader applications, carboxymethylation of Cassia occidentalis seed gum was carried out. The reaction conditions were optimized with respect to concentration of monochloroacetic acid, sodium hydroxide, solvent ratio, reaction time, and reaction temperature. Rheological studies of carboxymethyl gum exhibited relatively high viscosity and stability vis‐a‐vis unmodified Cassia occidentalis gum. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 94: 1606–1611, 2004