Reduction of some insecticide residues from grapes with washing treatments


TURKIYE ENTOMOLOJI DERGISI-TURKISH JOURNAL OF ENTOMOLOGY, vol.45, no.1, pp.125-137, 2021 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 45 Issue: 1
  • Publication Date: 2021
  • Doi Number: 10.16970/entoted.843754
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, BIOSIS, CAB Abstracts, Veterinary Science Database
  • Page Numbers: pp.125-137
  • Keywords: Chlorpyrifos-methyl, grape washing process, lambda-cyhalothrin, Manisa, pesticide residue reduction
  • Çanakkale Onsekiz Mart University Affiliated: Yes


Insecticide application is the most common method of insect control in agriculture. Efficiency of washing treatments in reduction of insecticide (chlorpyrifos-methyl and lambda-cyhalothrin) residues from grapes were investigated in this study. The trial was established in a Sultana seedless vineyard in Sarigol District, Manisa Province, Turkey in 2020. Method verification was performed with the recovery, limit of quantification and precision. Pesticidefree grapes were spiked with 0.5, 1 and 5 times of MRL for pesticides. The recovery of chlorpyrifos-methyl and lambdacyhalothrin were 102 and 101% respectively. QuEChERS method yielded an overall-recovery of 101%. These figures were within the SANTE recovery limits (60-140%) and the detection limits of the insecticides were below the MRLs. Grapes in a vineyard were sprayed with insecticides four times and harvested 0, 2, 4 and 7 d after the last spray. Washing (tap water, citric and acetic acid) and ultrasonic cleaning treatments were applied to harvested grapes. Washing treatments decreased residue levels and reductions increased with prolonged washing durations. Reductions also decreased with prolonged harvest durations from the last spray. The citric and acetic acid washing, and ultrasoniccleaning methods provided more efficient reduction than washing with tap water.