Počet záznamů: 1
An acidic exopolysaccharide α-D-galacturono-β-D-glucan produced by the cyanobacterium Scytonema sp.
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SYSNO ASEP 0586072 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název An acidic exopolysaccharide α-D-galacturono-β-D-glucan produced by the cyanobacterium Scytonema sp. Tvůrce(i) Uhliariková, I. (SK)
Matulová, M. (SK)
Lukavský, Jaromír (BU-J) RID, ORCID
Capek, P. (SK)Celkový počet autorů 4 Číslo článku 109088 Zdroj.dok. Carbohydrate Research. - : Elsevier - ISSN 0008-6215
Roč. 538, APR 2024 (2024)Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova Cyanobacteria ; Scytonema sp. ; Exopolysaccharides Vědní obor RIV EA - Morfologické obory a cytologie Obor OECD Cell biology CEP TN02000044 GA TA ČR - Technologická agentura ČR Způsob publikování Omezený přístup Institucionální podpora BU-J - RVO:67985939 UT WOS 001216838300001 EID SCOPUS 85188554109 DOI https://doi.org/10.1016/j.carres.2024.109088 Anotace Some 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. Pracoviště Botanický ústav Kontakt Martina 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 Rok sběru 2025 Elektronická adresa https://doi.org/10.1016/j.carres.2024.109088
Počet záznamů: 1