Artículo
Removal of the insecticide diazinon from liquid media by free and immobilized Streptomyces sp. isolated from agricultural soil
Briceño, Gabriela; Fuentes, María Soledad
; Rubilar, Olga; Jorquera, Milko; Tortella, Gonzalo; Palma, Graciela; Amoroso, Maria Julia del R.
; Diez, María C.
![Icon](/themes/CONICETDigital/images/conicet.png)
![Icon](/themes/CONICETDigital/images/conicet.png)
Fecha de publicación:
11/12/2013
Editorial:
Wiley VCH Verlag
Revista:
Journal of Basic Microbiology
ISSN:
0233-111X
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
From an agricultural soil that had received continuous applications of organophosphorus pesticides, 30 actinobacteria strains were isolated. Two strains, identified as Streptomyces sp. AC1-6 and Streptomyces sp. ISP4, were selected because of their tolerance to diazinon and based on the relationship between diazinon removal and microbial growth. In liquid medium with diazinon at concentrations of 25 and 50mgL-1, both strains were able to remove approximately 40-50% and 70-90% of the initial diazinon after 24 and 96h of incubation, respectively. This diazinon removal was accompanied by microbial growth of the strains, an initial pH decrease, and glucose consumption in the liquid medium. Evaluation of the diazinon removal achieved by the free actinobacteria and Streptomyces sp. AC1-6 immobilized on alginate beads revealed that the immobilized cells exhibited a 60% higher diazinon removal compared with the free cells. The reusability of the encapsulated biomass was confirmed, and a diazinon removal rate of more than 50% was obtained after the second batch. This work constitutes one of the few reports that describe Streptomyces strains as diazinon degraders. Given the high diazinon removal found, the streptomycetes exhibit suitable potential as diazinon-degrading actinobacteria for elimination of diazinon from liquid residues.
Palabras clave:
CA-ALGINATE BEADS
,
DIAZINON
,
FREE CELLS
,
IMMOBILIZED CELLS
,
STREPTOMYCES
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(CCT - NOA SUR)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - NOA SUR
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - NOA SUR
Articulos(PROIMI)
Articulos de PLANTA PILOTO DE PROC.IND.MICROBIOLOGICOS (I)
Articulos de PLANTA PILOTO DE PROC.IND.MICROBIOLOGICOS (I)
Citación
Briceño, Gabriela; Fuentes, María Soledad; Rubilar, Olga; Jorquera, Milko; Tortella, Gonzalo; et al.; Removal of the insecticide diazinon from liquid media by free and immobilized Streptomyces sp. isolated from agricultural soil; Wiley VCH Verlag; Journal of Basic Microbiology; 55; 3; 11-12-2013; 293-302
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