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Searching for microalgal species producing extracellular biopolymers
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SYSNO ASEP 0494193 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Searching for microalgal species producing extracellular biopolymers Author(s) Halaj, M. (SK)
Chvátalová, B. (SK)
Cepák, Vladislav (BU-J) RID
Lukavský, Jaromír (BU-J) RID, ORCID
Capek, P. (SK)Source Title Chemical Papers. - : Springer - ISSN 0366-6352
Roč. 72, č. 10 (2018), s. 2673-2678Number of pages 6 s. Language eng - English Country SK - Slovakia Keywords Microalgae ; Screening ; Cultivation ; Biopolymers ; Carbohydrates ; Sugar analysi Subject RIV CE - Biochemistry OECD category Biochemistry and molecular biology R&D Projects TE01020080 GA TA ČR - Technology Agency of the Czech Republic (TA ČR) Institutional support BU-J - RVO:67985939 UT WOS 000441004300024 EID SCOPUS 85051176822 DOI 10.1007/s11696-018-0517-4 Annotation Microalgae have been used in human applications for centuries, but in the mid-twentieth century, an industrial cultivation of some species began. In this study, 17 different microalgal species were screened for the production of extracellular polymeric substances (EPSs). EPS yields (16–1064 mg/L), carbohydrate (1–88%) and protein (0–16%) contents were found to vary greatly. Uronic acids have been identified in most EPSs, indicating their ionic nature. Monosaccharide compositions revealed the heteropolysaccharide type of all EPSs. Monosaccharide compositions revealed a high number of sugar units (6–8) in all EPSs. Besides, hexoses were found as the dominant sugar components in most species. Some EPSs were rich in deoxy-hexoses, i.e. rhamnose or fucose, and some had high pentose content, i.e. xylose or arabinose. In many EPSs partially methylated sugars have been determined. Of the 17 species of microalgae studied, six strains differed significantly in the production of EPSs from others and had a relatively high content of carbohydrates. Screening revealed the following major EPS producers: Chlorosarcinopsis sp. (Lukešová 1996/401), Klebsormidium flaccidum (Lukešová 1997/320), K. flaccidum (Kaštovská 1995/02), Dictyosphaerium chlorelloides (Kováčik 1978/11), Dictyosphaerium cf. tetrachotomum Printz (Fott 1959/1), and Dictyosphaerium cf. tetrachotomum Printz Růžička 1962/50). Dominant producers are selected for cultivation on a larger scale to obtain EPSs for detailed chemical studies and potential biological activities. Workplace Institute of Botany Contact 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 Year of Publishing 2019
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