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An Acidic Xylan from the Capsular Polysaccharide complex of Ocimum Gratissimum Seeds

IR@CFTRI: CSIR-Central Food Technological Research Institute, Mysore

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CR-05-83
 
Title An Acidic Xylan from the Capsular Polysaccharide complex of Ocimum Gratissimum Seeds
 
Creator Anjaneyalu, Y. V.
Ujeebur Rahman khan, M.
Tharanathan, R. N.
 
Subject 10 Plants
28 Polysaccharide Chemistry
 
Description An acidic xylan composed of D-xylose (48%). L-arabinose (16%). D-galactose (16%), and D-galacturonic acid (-20%) has been isolated from the capsular, mucilaginous polysaccharide-complex of the seeds of Ocimum gratissimum. Graded, acid hydrolysis afforded O-P-D-galactopyranosyl-(I-3)-L-arabinose, an aldobiouronic acid, and an aldotriouronic acid composed of D-XylOSe and D-gakturonic acid. Methylation analysis, together with the isolation of a xylan core from the acid-degraded polysaccharide. indicated that the polysaccharide contains a (l-4)-linked xylan backbone with 60% of the xylosyl residues substituted either on O-2 or O-3 with O-~-D-galactopyranosyl-(I-+3)-L-arabinofuranosyl. Larabinofuranosyl, or D-galactopyranosyluronic acid side-chains. These structural features for the polysaccharide accord with periodate-oxidation studies.
 
Date 1983
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://ir.cftri.com/10087/1/Carbohydrate_Research%2C_Volume_116%2C_Issue_1%2C_16_May_1983%2C_Pages_83-88.pdf
Anjaneyalu, Y. V. and Ujeebur Rahman khan, M. and Tharanathan, R. N. (1983) An Acidic Xylan from the Capsular Polysaccharide complex of Ocimum Gratissimum Seeds. Carbohydrate Research, 116. pp. 83-88.