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Structural studies of an acidic polysaccharide isolated from the leaf fibre of pineapple (Ananas comosus MERR.)

✍ Scribed by Swapan K. Bhaduri; Subodh K. Sen; Paresh C. Dasgupta

Publisher: Elsevier Science
Year: 1983
Tongue: English
Weight: 610 KB
Volume: 121
Category: Article
ISSN: 0008-6215
DOI: 10.1016/0008-6215(83)84018-x

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✦ Synopsis

Pineapple-fibre holocellulose was extracted with alkaline solutions of increasing concentration to give hemicellulose fractions I-III. Purified fraction I (major component) contained D-xylose, L-arabinose, and 4-0-methyl-D-glucuronic acid in the molar proportions 10:0.6: 1, and an average of -116 sugar residues, whereas its methylated product contained -94 sugar residues. Structural studies of the hemicellulose and its arabinose-free portion showed it to be a (1+4)-linked p-Dxylan with approximately every tenth residue carrying a 4-0-methyl-ru-D-glucopyranosyluronic acid group at O-2 and every sixteenth residue carrying an Larabinofuranosyl group at O-3.

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