Journal
FOOD ADDITIVES AND CONTAMINANTS
Volume 19, Issue 12, Pages 1162-1168Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/0265203021000012385
Keywords
cypermethrin; residues; grapes; raisins; processing
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Residues of the synthetic pyrethroid insecticide cypermethrin in fresh grapes of cv. Thomson Seedless and in raisins were studied. The commercial formulation Cymbush(R) 10% EC was applied according to the label onto the typical seedless variety and on a seed-producing clone. Samples were collected at time zero and at 15 or 21 days post-application. The raisins were produced either by submersion for 3 min in an aqueous solution of 3% potassium carbonate and 1% ethyl oleate, and dried for 15 days under direct sunlight or were dried without chemical processing. A gas chromatographic method was used for the analysis of residues. The residues in the grapes at the recommended preharvest interval (15 days) ranged from 0.23 to 0.41 mg kg(-1), whereas those in raisins ranged from 0.25 to 0.46 mg kg(-1).
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