Interior Chains of Glucuronomannan from Extracellular Polysacchardes of Suspension-cultured Tobacco Cells

Abstract

Methylation analyses and partial acid hydrolysis have indicated the similarity of the interior chains of the glucuronomannan, obtained from extracellular polysaccharides of tobacco cells to those of plant gums such as leiocarpan A and ghatti which contain contiguous 2-O-linked D-mannopyranose and 4-O-linked D-glucopyranosyluronic acid residues. Evidence also suggests that about 56% of 2-linked D-mannopyranose residues are substituted at position-3 with L-arabinofuranose residues as a single side chain.