Busca avançada
Ano de início
Entree
(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Biodegradation of the Pyrethroid Pesticide Esfenvalerate by Marine-Derived Fungi

Texto completo
Autor(es):
Birolli, Willian G. ; Alvarenga, Natalia ; Seleghim, Mirna H. R. ; Porto, Andre L. M.
Número total de Autores: 4
Tipo de documento: Artigo Científico
Fonte: MARINE BIOTECHNOLOGY; v. 18, n. 4, p. 511-520, AUG 2016.
Citações Web of Science: 9
Resumo

Esfenvalerate biodegradation by marine-derived fungi is reported here. Esfenvalerate (S,S-fenvalerate) and its main metabolites {[}3-phenoxybenzaldehyde (PBAld), 3-phenoxybenzoic acid (PBAc), 3-phenoxybenzyl alcohol (PBAlc), and 2-(4-chlorophenyl)-3-methylbutyric acid (CLAc)] were quantitatively analyzed by a validated method in triplicate experiments. All the strains (Penicillium raistrickii CBMAI 931, Aspergillus sydowii CBMAI 935, Cladosporium sp. CBMAI 1237, Microsphaeropsis sp. CBMAI 1675, Acremonium sp. CBMAI 1676, Westerdykella sp. CBMAI 1679, and Cladosporium sp. CBMAI 1678) were able to degrade esfenvalerate, however, with different efficiencies. Initially, 100 mg L-1 esfenvalerate (Sumidan 150SC) was added to each culture in 3 % malt liquid medium. Residual esfenvalerate (64.8-95.2 mg L-1) and the concentrations of PBAc (0.5-7.4 mg L-1), ClAc (0.1-7.5 mg L-1), and PBAlc (0.2 mg L-1) were determined after 14 days. In experiments after 7, 14, 21, and 28 days of biodegradation with the three most efficient strains, increasing concentrations of the toxic compounds PBAc (2.7-16.6 mg L-1, after 28 days) and CLAc (6.6-13.4 mg L-1, after 28 days) were observed. A biodegradation pathway was proposed, based on HPLC-ToF results. The biodegradation pathway includes PBAld, PBAc, PBAlc, ClAc, 2-hydroxy-2-(3-phenoxyphenyl)acetonitrile, 3-(hydroxyphenoxy)benzoic acid, and methyl 3-phenoxy benzoate. Marine-derived fungi were able to biodegrade esfenvalerate in a commercial formulation and showed their potential for future bioremediation studies in contaminated soils and water bodies. (AU)

Processo FAPESP: 12/19934-0 - Biodegradação de pesticidas por micro-organismos (fungos e bactérias)
Beneficiário:Andre Luiz Meleiro Porto
Linha de fomento: Auxílio à Pesquisa - Regular
Processo FAPESP: 04/09498-2 - Caracterização estrutural, identificação e quantificação de substâncias orgânicas e moléculas bioativas por cromatografia em fase líquida acoplada a espectrometria de massas tandem (LC-MS/MS) com equipamento híbrido quadrupolo-tempo de voo
Beneficiário:Fernando Mauro Lanças
Linha de fomento: Auxílio à Pesquisa - Programa Equipamentos Multiusuários