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Structure and biodegradation of the polysaccharide components of egg masses isolated from snails of an Ampullarius species

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1016/0008-6215(82)85011-8
AuthorSearch for: ; Search for: ; Search for: 1; Search for: 1
Affiliation
  1. National Research Council of Canada. Prairie Regional Laboratory
FormatText, Article
Abstract
A polysaccharide preparation, isolated from egg masses deposited by snails of an Ampullarius species, was purified via precipitation with Cetavlon in the presence of sodium borate, and found to contain d-galactose and a smaller proportion of d-glucose, and to have two components with sedimentation coefficients of 10S and 40S. A polysaccharide, isolated from freshly laid egg masses, was highly branched and was shown to contain nonreducing α-d-glucopyranosyl and β-d-galactopyranosyl end-groups, and 3,6-di-O-substituted β-d-galactopyranosyl residues. One or more of the polysaccharide components was a d-glucopyrano-d-galactopyranan with non-reducing α-d-glucopyranosyl end-groups (1→4)-linked to β-d-galactopyranosyl residues. The polysaccharide preparations, obtained from freshly laid egg masses and from those that were left for 10 and 15 days after being laid, were structurally different from each other. With the passage of time, progressive diminution of the 10S component and the proportion of d-glucose in the polysaccharide took place, suggesting that each constituent was consumed preferentially by the snail embryos as an energy source.
Publication date
PublisherElsevier
In
  • Carbohydrate Research 111, no. 1 (December 1982): 105–112.
LanguageEnglish
Peer reviewedYes
Identifier0008621582850118
NRCC-20412
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Record identifier322e4e71-94f3-42ba-a975-0d8338d01bd8
Record created2023-11-29
Record modified2023-11-29
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