Abstract
Cyanobacteria are a rich source of metabolites of a great biotechnological and industrial importance. In this screening study the exopolysaccharides (EPSs) produced by 25 cyanobacterial strains were characterized by yields, chemical composition (protein, carbohydrate, and uronic acid contents, monosaccharide composition, and polymer type) and proton NMR. Most of them were identified as glycoconjugates, i.e. glycoproteins or proteoglycans, in which heteropolysaccharides were composed of seven-to-ten monosaccharide units. At studied cyanobacterial species a significant variation of EPS yields (24–8085 mg/L), carbohydrate (9–67%) and protein (0–37.8%) contents was observed.
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Acknowledgements
This work was supported by the Slovak Grant Agency VEGA (Grant no. 2/0051/18) and Technology Agency of the Czech Republic (TE 01020080).
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Uhliariková, I., Chválová, B., Matulová, M. et al. Extracellular biopolymers produced by freshwater cyanobacteria: a screening study. Chem. Pap. 73, 771–776 (2019). https://doi.org/10.1007/s11696-018-0625-1
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DOI: https://doi.org/10.1007/s11696-018-0625-1