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Lactylated acidic exopolysaccharide produced by the cyanobacterium Nostoc cf. linckia
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SYSNO ASEP 0551541 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Lactylated acidic exopolysaccharide produced by the cyanobacterium Nostoc cf. linckia Tvůrce(i) Uhliariková, I. (SK)
Matulová, M. (SK)
Košťálová, Z. (SK)
Lukavský, Jaromír (BU-J) RID, ORCID
Čapek, P. (SK)Číslo článku 118801 Zdroj.dok. Carbohydrate Polymers. - : Elsevier - ISSN 0144-8617
Roč. 276, JAN 15 2022 (2022)Poč.str. 11 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova Nostoc. cf. linckyia ; acidic exopolysacharides ; structure ; nosturonic acid:3-O-lactyl-β-D-glucuronic acid ; antioxidant acitivity Vědní obor RIV EA - Morfologické obory a cytologie Obor OECD Cell biology CEP TE01020080 GA TA ČR - Technologická agentura ČR Způsob publikování Omezený přístup Institucionální podpora BU-J - RVO:67985939 UT WOS 000712468300004 EID SCOPUS 85117959243 DOI https://doi.org/10.1016/j.carbpol.2021.118801 Anotace Cyanobacteria produce a wide range of metabolites of interest for industrial or medical use. The cultivation of freshwater Nostoc cf. linckia yielded 5.4 g/L of a crude exopolysaccharide (cEPS) with a molecular weight of 1.31 × 105 g/mol. Ion-exchange chromatography of cEPS yielded two dominant fractions, EPS-1 and EPS-2, differing in molecular weight. The lower molecular weight fraction (EPS-1) was subjected to structural studies. Results of chemical and spectroscopic analyses showed that three of the four dominant sugars, glucose, galactose and
xylose are 1,4-linked in the backbone in the following order: [→4)-β-D-Xylp-(1 → 4)-β-D-Glcp-(1 → 4)-α-D-Galp-(1 → 4)-β-D-Glcp-(1→]n. Terminal mannose residues were identified as side chains linked at C3 of every third backbone xylose and every second glucose is branched at C6 by 3-O-lactyl-β-D-glucuronic acid (nosturonic acid). Antioxidant properties of EPS were tested using two in vitro methods. Both assays showed that the cEPS was more active than purified EPS-1 and EPS-2 fractions and deproteinized EPS.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 2023 Elektronická adresa https://doi.org/10.1016/j.carbpol.2021.118801
Počet záznamů: 1