Monitoring of pesticide residues in peppers from farmgate and pepper powder from wholesale market in Chungbuk area and their risk assessment

In order to monitor the pesticide residues in/on peppers and pepper powder and to assess their risk, pesticides in/on green pepper from 10 farmgates and fresh red pepper from 9 farmgates in Chungbuk area and pepper powder from 6 wholesale markets in Cheongju city were analyzed with a GLC and an HPLC. Also, pepper powder made by pulverization of the dried red pepper was analyzed to elucidate the change of pesticide residues in fresh red pepper by oven-drying. The number of pesticides detected from peen pepper, fresh red pepper, dried red pepper and pepper powder were 9, 12, 12, and 17, respectively, including 10 pesticides (one fungicide and nine insecticides) which were exceeded the maximum residue limits (MRLs). The exceeding rate of the MRL were higher in dried red pepper and pepper powder than in green pepper and fresh red pepper. Although some pesticides in peppers and pepper powder exceeded the MRLs, their estimated daily intake(EDI) were less than 1.6% of their acceptable daily intakes(ADIs), suggesting that it would be estimated to safe. By oven-drying of fresh red pepper at $65^{\circ}C$ for 72 hours, the weight of dried red pepper was from 1/5.9 from 1/7.8 of fresh red pepper, while the concentration of pesticide residue in dried red pepper increased from 1.7 to 8.2 times, suggesting that further reconsideration was required for the MRL of pepper powder.

충북지역 산지 고추와 유통 고춧가루 중 잔류농약 모니터링 및 위해성 평가

재배지 포장에서 채취한 풋고추와 홍고추, 열풍건조한 건고추 및 유통중인 고춧가루 중 농약 잔류량을 조사하고 그 안전성을 평가하기 위하여 충북지역의 10 농가에서 채취한 풋고추와 9 농가에서 채취한 홍고추, 청주시내 6개소의 대형유통마켓에서 채취한 8점의 고춧가루를 GLC-NPD/ECD와 HPLC로 분석하였다. 또한 건조에 따른 홍고추 중 농약잔류량 변화를 구명하기 위하여 농가에서 채취한 홍고추를 건조한 후 마쇄하여 농약잔류량을 분석하였다. 풋고추에서 9종, 홍고추와 건고추에서 12종 및 고춧가루에서 17종의 농약이 검출되었으며, 이 중 10종 농약(살균제 1성분과 살충제 9성분)이 잔류허용기준(MRL)을 초과하였다. MRL 초과율은 풋고추와 홍고추보다 건고추와 고춧가루에서 높았다. 일부 농약이 고추와 고춧가루에서 MRL을 초과하였으나 추정식이섭취량(EDI)은 ADI의 1.6% 미만으로 안전한 것으로 평가되었다. 또한 홍고추를 건조할 때 중량은 $5.9{\sim}7.8$배 감소하였으나 농약 잔류량은 $1.7{\sim}8.2$배 증가하여 고춧가루의 농약잔류허용기준 적용에 대한 재검토가 필요한 것으로 판단되었다.