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Title: Biotechnological potential of microorganisms isolated from the salar del hombre muerto, Argentina
Authors: Lopez, Marta Florencia
Martínez, Fabiana Lilian
Rajal, Verónica Beatriz
Irazusta, Verónica Patricia
Keywords: Engineering::Bioengineering
Issue Date: 2023
Source: Lopez, M. F., Martínez, F. L., Rajal, V. B. & Irazusta, V. P. (2023). Biotechnological potential of microorganisms isolated from the salar del hombre muerto, Argentina. Annals of the Brazilian Academy of Sciences, 95(1), e20211199-.
Journal: Annals of the Brazilian Academy of Sciences 
Abstract: Bacterial strains were isolated from soil and aqueous solution samples from the Salar del Hombre Muerto, Argentina. A total of 141 strains were characterized and the tolerance to sodium chloride was evaluated. We performed a screening to search for molecules of biotechnological interest: carotenoids (11%), emulsifiers (95%), and exopolysaccharides (6%), and to assess the production of enzymes, including proteolytic (39%), lipolytic (26%), hemolytic (50%), and catalase activities (99%); 25 bacterial strains were selected for further studies. Some of them produced biofilms, but only Bacillus sp. HA120b showed that ability in all the conditions assayed. Although 21 strains were able to form emulsions, the emulsifying index Kocuria sp. M9 and Bacillus sp. V3a cultures were greater than 50% and, emulsions were more stable when the bacteria grew in higher salt concentrations. Only pigmented Kocuria sp. M9 showed lipolytic activity on olive oil medium and was able to produce biofilms when cultured without and with 4 M of NaCl. Yellow pigments, lipase activity, and biosurfactant production were observed for Micrococcus sp. SX120. Summarizing, we found that the selected bacteria produced highly interesting molecules with diverse industrial applications and, many of them are functional in the presence of high salt concentrations.
ISSN: 0001-3765
DOI: 10.1590/0001-3765202320211199
Research Centres: Singapore Centre for Environmental Life Sciences and Engineering 
Rights: © 2023 Academia Brasileira de Ciencias. This is an open-access article distributed under the terms of the Creative Commons Attribution License.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SCELSE Journal Articles

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