Dissipation of selected pesticide residues in grapes by using ozone enriched atmosphere

In this research work, by exposing the grapes to an ozone-enriched environment maintained at 4 ◦C for 14 days, the dissipation of widely used pesticides in grapes that exceeded the maximum residue limit was investigated. The study was completed in two stages. High Performance Liquid Chromatography (HPLC) was used in the first phase to determine whether pesticides were present in the grapes. In the second phase, ozonation was applied to residues that exceeded the maximum residue limit (MRL) for imidacloprid, acetamiprid, and chlorpyrifos. Each pesticide was destroyed by ozonation, but to varying degrees. For imidacloprid (1.236–0.125 ppm), acetamiprid (0.421–0.237 ppm), and chlorpyrifos (3.617–1.146 ppm), the pesticide burden was progressively decreased from 1 to 14 days of storage. Chlorpyrifos levels were found to have decreased by up to 95%. Acetamiprid and imidacloprid also shown degradation of roughly 75–85%. Furthermore, the physicochemical characteristics of grapes, including brix (20.63), total acidity (0.35), weight loss percentage (8.45), and pH (3.72), were not significantly affected by ozone.