NDLI: Comparative study of carrageenans from reproductive and sterile forms of Tichocarpus crinitus (Gmel.) Rupr (Rhodophyta, Tichocarpaceae)

Content Provider	Springer Nature Link
Author	Barabava, A. O. Yermak, I. M. Glazuv, V. P. Isakov, V. V. Titlyav, E. A. Solov’eva, T. F.
Copyright Year	2005
Abstract	A comparative study of the structure and properties of the sulfated polysaccharides (carrageenans) isolated from the vegetative and reproductive forms of the red alga Tichocarpus crinitus was performed. The polysaccharides were separated into the gelling (KCl-insoluble) and non-gelling (KCl-soluble) fractions by precipitation with 4% KCl. The total content of polysaccharides extracted from the reproductive form of the alga was 1.8-fold more than that extracted from the vegetative form, and in the first case, the gelling polysaccharides mostly accumulated. The gelling polysaccharides from the vegetative form have the highest molecular weight (354 kD). According to the results of FT-IR and 13C-NMR spectroscopy, the gelling polysaccharide fractions from both forms are κ/β carrageenans. The differences concern the content of the κ- and β-disaccharide units and the presence of a small content of the sulfated disaccharide segments (precursors of the κ-carrageenans) in the polysaccharide from the reproductive form of the alga. The non-gelling polysaccharide fractions from both forms of the plant are mixtures of sulfated galactans with a low content of 3,6-anhydrogalactose.
Starting Page	350
Ending Page	356
Page Count	7
File Format	PDF
ISSN	00062979
Journal	Biochemistry (Moscow)
Volume Number	70
Issue Number	3
e-ISSN	16083040
Language	English
Publisher	Nauka/Interperiodica
Publisher Date	2005-01-01
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	T. crinitus carrageenan life history stage of algae 13C-NMR spectroscopy FT-IR spectroscopy Biomedicine general Bioorganic Chemistry Biochemistry Microbiology
Content Type	Text
Resource Type	Article
Subject	Biochemistry Biophysics Geriatrics and Gerontology

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