Number of the records: 1  

An acidic exopolysaccharide α-D-galacturono-β-D-glucan produced by the cyanobacterium Scytonema sp.

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    SYSNO ASEP0586072
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleAn acidic exopolysaccharide α-D-galacturono-β-D-glucan produced by the cyanobacterium Scytonema sp.
    Author(s) Uhliariková, I. (SK)
    Matulová, M. (SK)
    Lukavský, Jaromír (BU-J) RID, ORCID
    Capek, P. (SK)
    Number of authors4
    Article number109088
    Source TitleCarbohydrate Research. - : Elsevier - ISSN 0008-6215
    Roč. 538, APR 2024 (2024)
    Number of pages8 s.
    Languageeng - English
    CountryNL - Netherlands
    KeywordsCyanobacteria ; Scytonema sp. ; Exopolysaccharides
    Subject RIVEA - Cell Biology
    OECD categoryCell biology
    R&D ProjectsTN02000044 GA TA ČR - Technology Agency of the Czech Republic (TA ČR)
    Method of publishingLimited access
    Institutional supportBU-J - RVO:67985939
    UT WOS001216838300001
    EID SCOPUS85188554109
    DOI https://doi.org/10.1016/j.carres.2024.109088
    AnnotationSome cyanobacteria produce a wide range of secondary metabolites, some of which are of industrial interest. Exopolysaccharides, particularly interesting among them, represent relatively complex primary structures with interesting bioactivity, biodegradability and specific applications. Cultivation of the freshwater cyanobacterium Scytonema sp. provided a proteoglycan-type exopolysaccharide with a relatively low yield and a wide spectrum of molecular weights ( M w ) ranging from 2.2 to 1313 x 10 3 g/mol. Chemical analyses detected the presence of carbohydrates (46 wt%), proteins (10 wt%) and uronic acids (8 wt%). Monosaccharide analysis revealed up to seven neutral sugars with a dominance of glucose (23.6 wt%), galactose (7.4 wt%) and fucose (5.0 wt%) residues, while the others had a much lower content (0.93.4 wt%). The presence of galacturonic acid (8.0 wt%) indicated the appearance of ionic type of exopolysaccharide. A preliminary structural study indicated that the alpha-D-galacturono- beta-D-glucan forms a dominant part of Scytonema sp. exopolymer. Its backbone is composed of two 1,6linked and one 1,2-linked beta-D-Glc p residues, which is branched at O6 by side chains composed of alpha-D-GalA p (1> 2)- beta-D-Glc p (1> dimer or monomeric beta-D-Glc p (1> residue.
    WorkplaceInstitute of Botany
    ContactMartina Bartošová, martina.bartosova@ibot.cas.cz, ibot@ibot.cas.cz, Tel.: 271 015 242 ; Marie Jakšová, marie.jaksova@ibot.cas.cz, Tel.: 384 721 156-8
    Year of Publishing2025
    Electronic addresshttps://doi.org/10.1016/j.carres.2024.109088
Number of the records: 1  

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