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Mycoremediation of Congo red dye by filamentous fungi
Bhattacharya, Sourav; Das, Arijit; G, Mangai; K, Vignesh; J, Sangeetha.
Afiliação
  • Bhattacharya, Sourav; Jain University. Department of Microbiology. Karnataka. IN
  • Das, Arijit; Jain University. Department of Microbiology. Karnataka. IN
  • G, Mangai; Jain University. Department of Microbiology. Karnataka. IN
  • K, Vignesh; Jain University. Department of Microbiology. Karnataka. IN
  • J, Sangeetha; Jain University. Department of Microbiology. Karnataka. IN
Braz. j. microbiol ; 42(4): 1526-1536, Oct.-Dec. 2011. graf
Artigo em Inglês | LILACS | ID: lil-614619
Biblioteca responsável: BR32.1
ABSTRACT
Azo, anthroquinone and triphenylmethane dyes are the major classes of synthetic colourants, which are difficult to degrade and have received considerable attention. Congo red, a diazo dye, is considered as a xenobiotic compound, and is recalcitrant to biodegradative processes. Nevertheless, during the last few years it has been demonstrated that several fungi, under certain environmental conditions, are able to transfer azo dyes to non toxic products using laccases. The aim of this work was to study the factors influencing mycoremediation of Congo red. Several basidiomycetes and deuteromycetes species were tested for the decolourisation of Congo red (0.05 g/l) in a semi synthetic broth at static and shaking conditions. Poor decolourisation was observed when the dye acted as the sole source of nitrogen, whereas semi synthetic broth supplemented with fertilizer resulted in better decolourisation. Decolourisation of Congo red was checked in the presence of salts of heavy metals such as mercuric chloride, lead acetate and zinc sulphate. Decolourisation parameters such as temperature, pH, and rpm were optimized and the decolourisation obtained at optimized conditions varied between 29.25- 97.28 percent at static condition and 82.1- 100 percent at shaking condition. Sodium dodecyl sulphate polyacrylamide gel electrophoretic analysis revealed bands with molecular weights ranging between 66.5 to 71 kDa, a characteristic of the fungal laccases. High efficiency decolourisation of Congo red makes these fungal forms a promising choice in biological treatment of waste water containing Congo red.
Assuntos


Texto completo: Disponível Coleções: Bases de dados internacionais Contexto em Saúde: ODS3 - Meta 3.9 Reduzir as mortes por produtos químicos y contaminação do ar, água e solo Problema de saúde: Água, Saneamento e Higiene Base de dados: LILACS Assunto principal: Corantes Azur / Basidiomycota / Xenobióticos / Vermelho Congo / Lacase Idioma: Inglês Revista: Braz. j. microbiol Assunto da revista: Microbiologia Ano de publicação: 2011 Tipo de documento: Artigo País de afiliação: Índia Instituição/País de afiliação: Jain University/IN

Texto completo: Disponível Coleções: Bases de dados internacionais Contexto em Saúde: ODS3 - Meta 3.9 Reduzir as mortes por produtos químicos y contaminação do ar, água e solo Problema de saúde: Água, Saneamento e Higiene Base de dados: LILACS Assunto principal: Corantes Azur / Basidiomycota / Xenobióticos / Vermelho Congo / Lacase Idioma: Inglês Revista: Braz. j. microbiol Assunto da revista: Microbiologia Ano de publicação: 2011 Tipo de documento: Artigo País de afiliação: Índia Instituição/País de afiliação: Jain University/IN
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