Abstract
Two xylans have been isolated from the mature tissues of the tropical grass Panicum maximum—an arabino(4- O-methylglucurono)xylan and an acidic galactoarabinoxylan. Both consist of a main chain of β(1 → 4) linked d-xylopyranosyl residues. The former has average of ca 46 such residues to which are attached ca 7 l-arabinofuranosyl and ( ca 2 4- O-methyl- d-glucopyranuronosyl residues at C3 and C2 positions respectively. The acidic galactoarabinoxylan has a DP n of ca 90 and contains arabinose, galactose, xylose and uronic acid residues in the molar ratio 10:5:22:4. Methylation analysis and periodate oxidation indicated the highly branched nature of this polysaccharide.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
