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고추씨 중 농약 잔류와 고추씨 기름으로 농약의 이행

Pesticide residues in chili pepper seeds and their transfer into the seed oil

  • 이미경 (국립안동대학교 식품생명공학과) ;
  • 김종성 (국립안동대학교 식품생명공학과)
  • Lee, Mi-Gyung (Department of Food Science and Biotechnology, Andong National University) ;
  • Kim, Jong Seong (Department of Food Science and Biotechnology, Andong National University)
  • 투고 : 2016.05.08
  • 심사 : 2016.06.08
  • 발행 : 2016.08.31

초록

노지재배 고추(chili pepper)에 difenoconazole, lambda-cyhalothrin 및 lufenuron 세 성분 혼합 농약을 안전사용기준 보다 5배 높은 농도로 살포한 후 수확기에 홍고추를 수확했다. 수확한 고추를 수세 및 건조한 후 고추씨로부터 기름을 추출하고 이들 각 시료에 대해 농약 잔류량을 분석하였다. 그 결과 수확한 생 홍고추에 difenoconazole, lambda-cyhalothrin 및 lufenuron 성분이 각각 4.43, 0.334, 1.56 mg/kg으로 잔류했으며 수세에 의해 각각 91.4, 94.3, 85.3% 수준으로 잔류농도가 낮아졌다. 건조에 따른 difenoconazole, lambda-cyhalothrin 및 lufenuron 성분 각각의 농약 가공계수는 5.01, 4.94, 4.19로서 고추 건조에 따른 무게 증가 비율 4.6배를 잘 반영했고 건조과정 중 농약성분의 소실이 전혀 일어나지 않았음을 나타냈다. 고추씨에서는 difenoconazole과 lambda-cyhalothrin은 정량한계 이하(<0.005 mg/kg) 그리고 lufenuron은 두 시료에서 정량한계 이하(<0.005 mg/kg), 한 시료에서 0.0075 mg/kg으로 검출되어 고추 과피에 잔류하는 농약이 고추씨까지 이행되는 양은 거의 무시되는 수준임을 보여주었다. 그러나 고추씨 기름에서 difenoconazole과 lufenuron이 각각 0.0263, 0.0295 mg/kg으로 검출되어 고추씨 기름에서의 농약 농축계수가 difenoconazole 5.26, lufenuron 4.72로 나타났다. 이러한 결과는 지용성이 강한 농약성분의 유지에 대한 이론적 농축계수 6.8배를 잘 설명해준다. 정제과정 없이 압착 방식에 의해 추출되는 고추씨와 같은 식용유지에서 농약성분이 검출될 가능성이 있으므로 앞으로 이에 대한 더 많은 연구가 있어야 할 것이다.

과제정보

연구 과제 주관 기관 : 안동대학교

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