Artículo
Biotechnological potential of microorganisms isolated from the salar del hombre muerto, Argentina
Lopez, Marta Florencia
; Martínez, Fabiana Lilian
; Rajal, Verónica Beatriz
; Irazusta, Verónica Patricia
Fecha de publicación:
01/2023
Editorial:
Academia Brasileira de Ciencias
Revista:
Anais da Academia Brasileira de Ciencias
ISSN:
0001-3765
e-ISSN:
1678-2690
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
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.
Palabras clave:
BIOEMULSIFIERS
,
CAROTENOIDS
,
ENZYMES
,
EXOPOLYSACCHARIDES
,
HALOTOLERANT
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(INIQUI)
Articulos de INST.DE INVEST.PARA LA INDUSTRIA QUIMICA (I)
Articulos de INST.DE INVEST.PARA LA INDUSTRIA QUIMICA (I)
Citación
Lopez, Marta Florencia; Martínez, Fabiana Lilian; Rajal, Verónica Beatriz; Irazusta, Verónica Patricia; Biotechnological potential of microorganisms isolated from the salar del hombre muerto, Argentina; Academia Brasileira de Ciencias; Anais da Academia Brasileira de Ciencias; 95; 1; 1-2023; 1-16
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