Artículo
Production of Surface-Active Compounds by a Hydrocarbon-Degrading Actinobacterium: Presumptive Relationship with Lipase Activity
Colin, Veronica Leticia
; Bourguignon, Natalia
; Gomez, Johana Stefani
; Gianni de Carvalho, Katia
; Ferrero, Marcela Alejandra
; Amoroso, Maria Julia del R.
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Fecha de publicación:
12/2017
Editorial:
Springer
Revista:
Water, Air and Soil Pollution
ISSN:
0049-6979
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The replacement of synthetic surface-active compounds (SACs) by their microbial counterparts is carving out a niche for themselves in the field of bioremediation. However, the high cost of microbial products has limited their application at a realistic scale. In the current study, several hydrocarbon-degrading microorganisms were assayed as potential SAC producers in low-cost liquid media. Only the strain CC10, placed within the class Actinobacteria, was able to produce emulsifying molecules by using a combination of sugarcane vinasse or crude glycerol (as cheap carbon substrates) with urea or peptone (as nitrogen sources). The emulsifying activity of the supernatants and the stability of emulsions formed with motor oil depended on the carbon and nitrogen sources. However, the biodegradability of these metabolites was only associated with the carbon substrate, and it was always higher than the two tested synthetic surfactants, sodium dodecyl sulfate and Triton X-100. Also, a positive linear association between emulsifying and lipase activities of the CC10 supernatants was detected (r = 0.781; p = 0.219), with the maximum activities detected in the glycerol-peptone supernatant. Interestingly, this supernatant was able to emulsify different oily substrates, a property that could be used to increase the efficiency of the treatment of effluents with high fat content.
Palabras clave:
Actinobacterium
,
Bioemulsifier
,
Lipase
,
Oily Substrates
,
Raw Glycerol
,
Vinasse
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(PROIMI)
Articulos de PLANTA PILOTO DE PROC.IND.MICROBIOLOGICOS (I)
Articulos de PLANTA PILOTO DE PROC.IND.MICROBIOLOGICOS (I)
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Articulos de SEDE CENTRAL
Citación
Colin, Veronica Leticia; Bourguignon, Natalia; Gomez, Johana Stefani; Gianni de Carvalho, Katia; Ferrero, Marcela Alejandra; et al.; Production of Surface-Active Compounds by a Hydrocarbon-Degrading Actinobacterium: Presumptive Relationship with Lipase Activity; Springer; Water, Air and Soil Pollution; 228; 12; 12-2017
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