
%0 Journal Article
%A Tharanathan, RN 
%A Anjaneyalu, YV 
%T Structure of the Acid-Stable Core-Polysaccharide Derived From the Seed Mucilage of <I>Ocimum Basilicum</I>
%J Australian Journal of Chemistry
%D 1975/06/01
%V 28
%N 6
%P 1345-1350
%K 
%R https://doi.org/10.1071/CH9751345
%U https://www.publish.csiro.au/paper/CH9751345 
%X Partial acid hydrolysis of the mucilage gave an acid-stable core- polysaccharide composed of glucose and mannose (10 : 2). Repeated methylation of the core-polysaccharide by the usual techniques gave chloroform-soluble and -insoluble fractions. Hakomori methylation of the two fractions, hydrolysis, conversion of the sugar derivatives into alditol acetates and their identification by g.l.c.revealed that the soluble fraction is a glucomannan-type polymer while the insoluble fraction is of the glucan type. Combined g.l.c.-m.s. of the derived alditol acetates indicated that the glucan fraction is a degraded cellulose material while the glucomannan-type fraction is a linear polymer with sugar residues linked by (1&#8594;4)-&#946;-glycosidic bonds terminated at the non-reducing end by a unit of D-glucose and/or D- mannose. The presence of contiguous glucose as well as glucose and mannose units was indicated by isolation of the corresponding oligosaccharides from the core-polysaccharide. Thus, the core- polysaccharide was found to be a composite aggregate of degraded cellulose and glucomannan-type polymers. 
