Removal Rate of Residual Pesticides in Perilla Leaves with Various Washing Methods

수세 방법에 따른 깻잎의 잔류농약 제거율 연구

  • Lee, Jong-Mee (Department of Food and Nutrition, Ewha Womans University) ;
  • Lee, Hye-Ran (Department of Food and Nutrition, Ewha Womans University) ;
  • Nam, Sang-Min (Department of Food and Nutrition, Ewha Womans University)
  • 이종미 (이화여자대학교 생활환경대학 식품영양학과) ;
  • 이혜란 (이화여자대학교 생활환경대학 식품영양학과) ;
  • 남상민 (이화여자대학교 생활환경대학 식품영양학과)
  • Published : 2003.08.01

Abstract

Removal rates of residual organic phosphorous pesticides (chlorpyrifos-methyl and fenitrothion) in Perilla leaves by various washing methods were determined. The removal rates using stagnant tap water were 20.05 and 17.70% for chlorpyrifos-methyl and fenitrothion, whereas 44.28 and 39.10% using flowing tap water, and 19.14 and 15.43% using activated carbon-added stagnant tap water, respectively. Activated carbon-added flowing stagnant tap water removed 25.29 and 15.43% of chlorpyrifos-methyl and fenitrothion, and removal rates were 53.51 and 50.62% with alkaline solution and 30.25 and 28.09% with acidic solution, respectively. With neutral detergent solution, removal rates were 81.52 and 76.56% for chlorpyrifos-methyl and fenitrothion, respectively. Results revealed washing method using neutral detergent solution was most effective for removing residual pesticides.

고여 있는 물 세척으로 chlorpyrifos-methyl은 20.05%, fenitrothion은 17.70% 제거되었고 흐르는 물 세척으로 각각 44.28%, 39.10%가 제거되었다. 활성탄을 첨가한 고여 있는 물 세척으로 chlorpyrifos-methyl은 19.14%, fenitrothion은 15.43%, 활성탄을 첨가하고 물리적 힘을 가한 경우 각각 25.29%, 23.80%가 제거되었다. 또한 중성세제 용액 세척으로 81.52%와 76.56%가 제거되었고 알칼리 및 산성 용액 세척으로 각각 53.51%, 50.62%과 30.25%, 28.09%가 제거되었다. 농약의 종류에 관계없이 고여 있는 물보다 흐르는 물에 의한 제거 효과가 높았으며 중성세제 용액에 의한 세척이 잔류농약 제거에 가장 효과적인 방법으로 밝혀졌다. Cheong은 농약 성분이 잔류하더라도 극미량으로 체내에서 대사 분해될 수 있으면 안전한 농산물로 평가한다고 보고하였다. 또한 농산물의 저장 운반 등 유통기간 동안 자연 감소하는 것을 감안할 때 농약이 처리기준에 맞게 사용된다면 안전상문제가 되지 않을 것으로 사료된다. 채소류의 잔류농약을 제거하기 위해서는 제품의 변성이 일어나지 않는 범위에서 중성세제와 충분한 양의 물로 횟수를 많이, 시간을 길게 세척하는 것이 바람직하다. 그러나, 농약의 부작용을 최소한으로 줄이고 안전한 농산물을 생산하기 위해서는 농약 제조 판매자, 취급자 및 사용자 모두가 농약에 대한 올바른 이해로 바르게 취급, 관리하는 자세가 필요하다. 또한 자연상태에서 빠른 시간 내에 분해되어 생태계균형과 질서를 파괴하지 않는 농약의 개발 연구가 계속되어야겠다.

Keywords

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