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

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Author(s):	Birolli, Willian Garcia ; Porto, Andre Luiz Meleiro Total Authors: 2
Document type:	Journal article
Source:	Environmental Science and Pollution Research; v. N/A, p. 15-pg., 2022-12-29.
Abstract
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)

FAPESP's process:	12/19934-0 - Biodegradation of pesticides by microorganisms (fungi and bacteria)
Grantee:	Andre Luiz Meleiro Porto
Support Opportunities:	Regular Research Grants