Change of the Concentration of Pesticide Residues in Pepper Powder by Storage Temperature and Storage Period

저장온도와 기간에 따른 고춧가루 중 농약의 잔류량 변화

  • Jo, Sung-Ae (Research Institute of Public Health&Environment, Kangnam Agro-marin products Inspection center, Kangnam agricutual products Inspection Team) ;
  • Kim, Eun-Hee (Research Institute of Public Health&Environment, Kangnam Agro-marin products Inspection center, Kangnam agricutual products Inspection Team) ;
  • Kim, Kyung-Sig (Research Institute of Public Health&Environment, Kangnam Agro-marin products Inspection center, Kangnam agricutual products Inspection Team) ;
  • Kim, Jung-Hun (Research Institute of Public Health&Environment, Kangnam Agro-marin products Inspection center, Kangnam agricutual products Inspection Team) ;
  • Park, Seog-Gee (Research Institute of Public Health&Environment, Kangnam Agro-marin products Inspection center, Kangnam agricutual products Inspection Team)
  • 조성애 (서울시보건환경연구원 강남농수산물검사소 농산물검사팀) ;
  • 김은희 (서울시보건환경연구원 강남농수산물검사소 농산물검사팀) ;
  • 김경식 (서울시보건환경연구원 강남농수산물검사소 농산물검사팀) ;
  • 김정헌 (서울시보건환경연구원 강남농수산물검사소 농산물검사팀) ;
  • 박석기 (서울시보건환경연구원 강남농수산물검사소 농산물검사팀)
  • Published : 2009.09.30

Abstract

The purpose of this study is to examine changes in the pesticides residues in pepper powder by storage conditions. Analysis of pesticide residues was performed using multiresidue analytical methods and the number of pesticides detected from 60 pepper powders was 7 pesticides such as cypermethrin, fenvalerate, kresoxim-methyl, chlorpyrifos, chlorfenapyr azoxystrobin, tebuconazole. The concentrations of cypermethrin and tebuconazole were exceeded their maximum residue limits (MRLs). The degradation patterns of pesticides at $-5^{\circ}C$ were compared to those at $20^{\circ}C$ and $4^{\circ}C$. Without reference to storage temperature, degradation rates of azoxystrobin and fenvalerate were above 80%. Degradation rate of chlorpyrifos was 47% at storage $4^{\circ}C$, $20^{\circ}C$ and 34% at storage $-5^{\circ}C$. During each storage peroid, the degradation patterns were more lower at $-5^{\circ}C$ than at $20^{\circ}C$ and $4^{\circ}C$.

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