USE OF ENVIRONMENTAL MICRORGANISMS IN THE BIODEGRADATION OF STROBILURINIC AND PYRETHROIDS PESTICIDES WIDELY EMPLOYED IN THE BRAZILIAN AGRICULTURE

Abstract

The data released by the Brazilian National Agency of Sanitary Surveillance showed that chemical groups of pesticides developed more recently such as strobilurins and pyrethroids already are among the most found in food samples, with emphasis on the strobilurin compounds pyraclostrobin, azoxystrobin and trifloxystrobin and, the pyrethroids lambda-cyhalothrin, bifenthrin, cypermethrin, fenpropathrin and etofenprox, which are among the 30 active ingredients most found as contaminants by the Brazilian Program of Pesticides Analysis in Food. In the recovery of extensive agricultural areas contaminated with pesticides, the most promising method is the bioremediation with microorganisms, since they eliminate pollutants in mild conditions in places of difficult removal, characterizing a sustainable method of decontamination. However, few studies of soil biodegradation have been conducted and large-scale bioremediation methodologies are not available in the literature. In this way, this work has the objective of studying the biodegradation of pyrethroid and estrubilurinic pesticides (widely used in Brazil) aiming the application of environmental microorganisms from different origins and the achievement of an applied bioremediation methodology.