Premium
Polysaccharidecomponents of the water‐soluble mucilage from the bark of thesilk cotton or kapok tree ( Ceiba pentandra var. indica )
Author(s) -
S. Raju T.
Publication year - 1997
Publication title -
biotechnology and applied biochemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.468
H-Index - 70
eISSN - 1470-8744
pISSN - 0885-4513
DOI - 10.1111/j.1470-8744.1997.tb00435.x
Subject(s) - ceiba , mucilage , polysaccharide , arabinose , bark (sound) , chemistry , chromatography , fraction (chemistry) , galactose , arabinogalactan , botany , xylose , organic chemistry , biology , fermentation , ecology
The mucilaginous polysaccharide complex isolated from the bark of the silk cotton or kapok tree ( Ceiba pentandra var. indica ) upon delignification followed by graded Cetavlon and ethanol precipitation afforded acidic and neutral polysaccharide fractions which were further purified by ion‐exchange chromatography. The acidic fractions contained two structurally similar glucuronorhamnogalacturonans with different physical properties [Raju, Gowda and Anjaneyalu (1989) Carbohydr. Res. 191, 321Ő332]. The neutral polysaccharide fraction was further fractionated by DMSO into DMSO‐soluble and DMSO‐insoluble fractions. The DMSO‐soluble fraction contained L‐arabinose and D‐galactose in a molar ratio of about 2:1, and the DMSO‐insoluble fraction contained D‐glucose and traces of D‐xylose, indicating that the water‐soluble mucilage of C. pentandra is composed of at least four different polysaccharide components: two structurally similar glucuronorhamnogalacturonans, an arabinogalactan and a xylo‐glucan.