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Structural studies of a glucan isolated from blue-green alga Spirulina platensis

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FC-02-89
 
Title Structural studies of a glucan isolated from blue-green alga Spirulina platensis
 
Creator Madhavi Sekharam, K.
Venkataraman, L. V.
Salimath, P. V.
 
Subject 01 Biotechnology and Bioengineering
01 Algae
 
Description It has been suggested that blue-green alga could provide a source of unconventional protein for use in foods and feeds. This study examined the structure and chemical nature of a glucan isolated from this alga. The alga was cultivated in fresh water (with bicarbonate as C source and NaNO3 as N source), harvested by filtration, washed, freeze-dried, defatted and sequentially extracted with 70% alcohol and cold and hot water. The insoluble residue was extracted with HCl at 70 degree C, the extracts being pooled, dialysed, concentrated, precipitated with alcohol and dried. The acid-soluble polysaccharide obtained was subjected to methylation analysis, periodate oxidation, CrO3 oxidation and enzymatic analysis. The results obtained indicated that the acid-soluble polysaccharide consists principally of glucose with small amounts of sulphate. It was found to have an alpha-1,4-linked glucan backbone with frequent side-chains through alpha-1,6-linked glucosyl residues.
 
Date 1989
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://ir.cftri.com/2163/1/Food%20Chemistry%2031%20%281989%29%2085-91.pdf
Madhavi Sekharam, K. and Venkataraman, L. V. and Salimath, P. V. (1989) Structural studies of a glucan isolated from blue-green alga Spirulina platensis. Food Chemistry, 31 (2). pp. 85-91. ISSN 0308-8146