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Establishment of Pre-Harvest Residue Limits (PHRL) of Flubendiamide and Pyriofenone on Strawberry (Fragaria ananassa Duch.)

생산단계 잔류허용기준설정을 위한 Flubendiamide 및 Pyriofenone의 딸기(Fragaria ananassa Duch.) 중 경시적 잔류특성 연구

  • Received : 2017.02.28
  • Accepted : 2017.03.18
  • Published : 2017.03.31

Abstract

In this study, the residue patterns of flubendiamide and pyriofenone registered in the strawberry were investigated to predict pre-harvest residue limit (PHRL). The samples were harvested at 0, 1, 2, 3, 5, 7, 10 days after treatment and the pesticide residues were analyzed by HPLC/UVD. The limit of quantification (LOQ) was $0.01mg\;kg^{-1}$ for flubendiamide and pyriofenone. The recovery levels of flubendiamide and pyriofenone were $90.9{\pm}2.2%$ and $81.9{\pm}0.8%$, $87.7{\pm}2.1%$ and $85.3{\pm}1.1%$ for spiked levels of 0.01 and $0.1mg\;kg^{-1}$, respectively. The values of biological half-lives for field 1 and field 2 were 8.1 and 7.2 days for flubendiamide, 7.0 and 6.9 days for pyriofenone. According to these results, we recommends the level of PHRL on strawberry for flubendiamide and pyriofenone as 1.87 and $3.76mg\;kg^{-1}$ at 10 days before harvest, respectively.

Keywords

biological half-life;pre-harvest residue limit;flubendiamide;pyriofenone

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Acknowledgement

Supported by : 강원대학교, 식품의약품안전처