Polysaccharide components from the scape of Musa paradisiaca: main structural features of water-soluble polysaccharide component |
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Authors: | YV Anjaneyalu RL Jagadish T Shantha Raju |
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Institution: | (1) Department of Studies in Chemistry, University of Mysore Manasagangotri, Mysore, 570 006, India |
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Abstract: | Polysaccharide components present in the pseudo-stem (scape) of M. paradisiaca were purified from acetone powder of the scape
by delignification followed by extraction with aqueous solvents into water soluble polysaccharide (WSP), EDTA-soluble polysaccharide
(EDTA-SP), alkali-soluble polysaccharide (ASP) and alkali-insoluble polysaccharide (AISP) fractions. Sugar compositional analysis
showed that WSP and EDTA-SP contained only D-Glc whereas ASP contained D-Glc, L-Ara and D-Xyl in ∼ 1:1:10 ratio, respectively,
and AISP' contained D-Glc, L-Ara and D-Xyl in ∼ 10:1:2 ratio, respectively. WSP was further purified by complexation with
iso-amylalcohol and characterized by specific rotation, IR spectroscopy, Iodine affinity, ferricyanide number, blue value,
hydrolysis with α-amylase and glucoamylase, and methylation linkage analysis, and shown to be a amylopectin type α-D-glucan.
This revised version was published online in November 2006 with corrections to the Cover Date. |
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Keywords: | polysaccharide components pseudo-stem (scape) Musa paradisiaca carbohydrates structure |
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