Esfenvalerate biodegradation by marine fungi is affected by seawater and emulsifier formulation

Autor(es)

Birolli, Willian Garcia ; Porto, Andre Luiz Meleiro

• Tipo de documento: Artigo Científico
• Fonte: Environmental Science and Pollution Research; v. N/A, p. 15-pg., 2022-12-29.

Resumo

Pesticides already were detected in the oceans, and their fates require evaluation in these environmental conditions. Therefore, marine-derived fungi were assessed for Esfenvalerate biodegradation, approaching the effects of seawater and use of commercial emulsifiable formulation. Residual pesticide and four metabolites were quantified. Furthermore, kinetics were determined for the three tested strains (Microsphaeropsis sp. CBMAI 1675, Acremonium sp. CBMAI 1676, and Westerdykella sp. CBMAI 1679). These facultative marine fungi biodegraded up to 87 +/- 2% of 100 mg L-1 Esfenvalerate in liquid media. However, Esfenvalerate biodegradation was faster in low salinity conditions than in artificial seawater. Moreover, rates of consumption were higher for Esfenvalerate in the pure form than for the commercial emulsifiable formulation. These results suggest that half-life of Esfenvalerate formulated with inert ingredients in seawater can have a double prolongation effect that can contribute to health and environmental issues. (AU)

• Processo FAPESP: 12/19934-0 - Biodegradação de pesticidas por micro-organismos (fungos e bactérias)
• Beneficiário: Andre Luiz Meleiro Porto
• Modalidade de apoio: 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
• Modalidade de apoio: Auxílio à Pesquisa - Programa Equipamentos Multiusuários