The potential of extracellular biopolymer production by Mesorhizobium sp. from monosaccharide constituents of lignocellulosic biomass.

Autor: Roesler BCS; Bioprocess Engineering Laboratory, School of Chemistry and Food, Universidade Federal Do Rio Grande, Rio Grande, RS, 96203-900, Brazil., Vaz RG; Bioprocess Engineering Laboratory, School of Chemistry and Food, Universidade Federal Do Rio Grande, Rio Grande, RS, 96203-900, Brazil., Castellane TCL; Laboratory of Genetics of Bacteria and Applied Biotechnology, Department of Biology Applied To Agriculture, Universidade Estadual Paulista UNESP/FCAV, Jaboticabal, SP, 14884-900, Brazil., de Macedo Lemos EG; Laboratory of Genetics of Bacteria and Applied Biotechnology, Department of Biology Applied To Agriculture, Universidade Estadual Paulista UNESP/FCAV, Jaboticabal, SP, 14884-900, Brazil., Burkert CAV; Bioprocess Engineering Laboratory, School of Chemistry and Food, Universidade Federal Do Rio Grande, Rio Grande, RS, 96203-900, Brazil. burkert@furg.br.
Jazyk: angličtina
Zdroj: Biotechnology letters [Biotechnol Lett] 2021 Jul; Vol. 43 (7), pp. 1385-1394. Date of Electronic Publication: 2021 Apr 02.
DOI: 10.1007/s10529-021-03119-9
Abstrakt: Objective: The effects of monosaccharide constituents of lignocellulosic materials on exopolysaccharide (EPS) production by Mesorhizobium sp. Semia 816 were studied.
Results: According to the results, by using sugars commonly found in lignocellulosic biomass as carbon sources (glucose, arabinose and xylose), no significant differences were observed in the production of EPS, reaching 3.39 g/L, 3.33 g/L and 3.27 g/L, respectively. Differences were observed in monosaccharide composition, mainly in relation to rhamnose and glucuronic acid contents (1.8 times higher when arabinose was compared with xylose). However, the biopolymers showed no differences in relation to rheological properties, with EPS aqueous-based suspensions (1.0% w/v) presenting pseudoplastic behavior, and a slight difference in degradation temperatures. Using soybean hulls hydrolysate as carbon source, slightly higher values were obtained (3.93 g/L).
Conclusion: The results indicate the potential of the use of lignocellulosic hydrolysates containing these sugars as a source of carbon in the cultivation of Mesorhizobium sp. Semia 816 for the production of EPS with potential industrial applications.
Databáze: MEDLINE
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