Decolorization and Detoxification of Synthetic Dyes by Mexican Strains of Trametes sp

Laura N. Levin, Carlos E. Hernández-Luna, Guillermo Niño-Medina, Juan Pablo García-Rodríguez, Iosvany López-Sadin, Gerardo Méndez-Zamora and Guadalupe Gutiérrez-Soto
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Laura N. Levin: Laboratorio de Micología Experimental, Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, INMIBO-CONICET, Buenos Aires 1428 CABA, Argentina
Carlos E. Hernández-Luna: Laboratorio de Enzimología, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, Pedro de Alba S/N., Ciudad Universitaria, San Nicolás de los Garza, Nuevo León C.P. 66455, Mexico
Guillermo Niño-Medina: Universidad Autónoma de Nuevo León, Facultad de Agronomía, Francisco Villa S/N., Col. Ex Hacienda El Canadá, General Escobedo, Nuevo León C.P. 66050, Mexico
Juan Pablo García-Rodríguez: Universidad Autónoma de Nuevo León, Facultad de Agronomía, Francisco Villa S/N., Col. Ex Hacienda El Canadá, General Escobedo, Nuevo León C.P. 66050, Mexico
Iosvany López-Sadin: Universidad Autónoma de Nuevo León, Facultad de Agronomía, Francisco Villa S/N., Col. Ex Hacienda El Canadá, General Escobedo, Nuevo León C.P. 66050, Mexico
Gerardo Méndez-Zamora: Universidad Autónoma de Nuevo León, Facultad de Agronomía, Francisco Villa S/N., Col. Ex Hacienda El Canadá, General Escobedo, Nuevo León C.P. 66050, Mexico
Guadalupe Gutiérrez-Soto: Universidad Autónoma de Nuevo León, Facultad de Agronomía, Francisco Villa S/N., Col. Ex Hacienda El Canadá, General Escobedo, Nuevo León C.P. 66050, Mexico

IJERPH, 2019, vol. 16, issue 23, 1-13

Abstract: Laccases have attracted a great deal of interest because of their remarkable ability for the degradation of synthetic dyes present in wastewaters. New laccase producing sources with robust operational and functional properties are being continuously explored. In this work, the potential for the decolorization and detoxification of synthetic dyes was evaluated in two Mexican strains of the genus Trametes . The decolorization capacity of Trametes maxima LE130 and Trametes sp. LA1 was tested in solid and liquid media. The phytotoxicity of the degradation products was determined using Raphanus sativus and Pisum sativum seeds. In solid media, both strains showed a higher decolorization capacity ( p ≤ 0.05) than Phanerochaete chrysosporium ATCC 24725, which is known to be very efficient in lignin and dye-degradation. They produced laccase as the main ligninolytic enzyme; T. maxima LE130 secreted a single isoform of 43.9 kDa, while Trametes sp. LA1 produced three isoforms of 67.3, 58.6 and 52.7 kDa, respectively. Trametes sp. LA1 culture fluids were capable of decolorizing and detoxifying chemically diverse dyes (anthraquinonic dye Remazol Brilliant Blue R, azoic Reactive Black 5 and triphenylmethane Crystal Violet) without the addition of redox mediators. Therefore, this could be considered as a new laccase source which could be potentially competitive in the bioremediation of dye-containing wastewaters.

Keywords: detoxification; dye decolorization; isoforms; laccase; waste water (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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