Effect of ozone application on the removal of pesticides from grapes and green bell peppers and changes in their nutraceutical quality

The present study evaluates the efficacy of ozonated water for the removal of pesticide residues in grapes and green bell peppers. Fruit fortified with pesticides (azoxystrobin, chlorothalonil, chlorpyrifos, cypermethrin, hexaconazole and methyl parathion) were subjected to 15 and 30 min aqueous ozo...

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Published in:Journal of environmental science and health. Part B, Pesticides, food contaminants, and agricultural wastes Pesticides, food contaminants, and agricultural wastes, 2021, Vol.56 (8), p.722-730
Main Authors: Swami, Saurabh, Kumar, Birendra, Singh, Shashi Bala
Format: Article
Language:English
Subjects:
Ascorbic acid
Azoxystrobin
Chlorothalonil
Chlorpyrifos
Cypermethrin
Fruits
Functional foods & nutraceuticals
Grapes
grapes and peepers
Insecticides
Kaempferol
Methyl parathion
Ozonation
Ozone
ozone treatment
Paraoxon
Parathion
Peppers
Pesticide residues
Pesticide toxicity
Pesticides
Pollutant removal
Polyphenols
Quercetin
Residues
Rutin
Vegetables
Vitaceae
Water analysis
Water sampling
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Summary:The present study evaluates the efficacy of ozonated water for the removal of pesticide residues in grapes and green bell peppers. Fruit fortified with pesticides (azoxystrobin, chlorothalonil, chlorpyrifos, cypermethrin, hexaconazole and methyl parathion) were subjected to 15 and 30 min aqueous ozone treatment. GC analysis of ozonated fruits showed a 48.67% to 96.95% decrease in pesticide residues of different pesticides. Methyl paraoxon, a toxic degradation product of methyl parathion, was detected in the ozonated water sample. To assess the effect of ozonation on the nutraceutical quality of fruits, the concentrations of eleven polyphenols and ascorbic acid were analyzed. The individual polyphenols showed different trend in 15 and 30 min treatment. Overall, there was an increase in the levels of all the polyphenols in grapes after 30 min ozonation treatment. In peppers, there was a net increase in quercetin, quercetin-3-O-glucoside, rutin and kaempferol in 30 min while other polyphenols were decreased. The ascorbic acid content of both the fruits was decreased by more than 70% upon ozonation. Thus, ozonation treatment was effective in pesticide removal. However, it changed the nutraceutical quality of grapes and green bell peppers.
ISSN:0360-1234
1532-4109
DOI:10.1080/03601234.2021.1940660