Journal of Applied Biological Chemistry

The Korean Society for Applied Biological Chemistry (한국응용생명화학회)
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Residual characteristics and processing factors of azoxystrobin during eggplant and lettuce processing

가지와 상추의 가공 중 azoxystrobin의 잔류량 변화 및 가공계수

  • Kim, Jeong-Ah (Department of Food Engineering, Daegu University) ;
  • Seo, Jeong-A (Department of Food Engineering, Daegu University) ;
  • Lee, Hye-Su (Department of Food Engineering, Daegu University) ;
  • Im, Moo-Hyeog (Department of Food Engineering, Daegu University)
  • Received : 2019.12.30
  • Accepted : 2020.02.04
  • Published : 2020.03.31
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Abstract

This study was conducted to investigate changes in pesticide residues in eggplant and lettuce during washing and cooking processes after application with azoxystrobin. Eggplant was processed with running washing, steaming, and stir-frying, and lettuce was processed with soaking washing, running washing, soaking and running washing, ultrasonic cleaning, and blanching. The limit of quantitation of GC analysis of azoxystrobin was 0.01 mg/kg and the recovery rate was 84.7-109.5%. The azoxystrobin processing factors (PFs) and reduction rates in eggplant and lettuce were calculated and the results were as follows. In the case of eggplant, the azoxystrobin PF and reduction rate of running washing were 0.29 and 71.1%, respectively, those of steaming were 0.32 and 68.0%, respectively, and those of stir-frying were 0.24 and 75.7%, respectively. In the case of lettuce, the azoxystrobin PF and reduction rate of soaking washing were 0.25, 75.3%, those of running washing were 0.61 and 38.9%, respectively, those of soaking and running washing were 0.32, 68.0%, those of ultrasonic cleaning were 0.47 and 53.1%, respectively, and those of blanching were 0.26 and 73.6%, respectively. It could be identified that pesticide residues in eggplant and lettuce can be effectively reduced through washing and cooking processes and that most of pesticide residues were removed when cooking processes were undergone after washing. Therefore, azoxystrobin PFs after washing and processing can be provided as basic data for risk assessment.

본 연구는 azoxystrobin 농약을 가지와 상추에 처리한 후 세척 및 조리과정 중 농약의 잔류량 변화를 조사하기 위해 수행하였다. 가지는 흐르는 물 세척, 찜, 볶음으로 가공하였으며, 상추는 담금 물 세척, 흐르는 물 세척, 담금 후 흐르는 물 세척, 초음파세척, 데치기로 가공하였다. Azoxystrobin의 GC분석의 정량 한계는 0.01 mg/kg이었으며, 회수율은 84.7-109.5%이었다. Azoxystrobin을 살포하여 수확한 가지의 농약 잔류량은 0.204 mg/kg, 상추의 잔류량은 12.296 mg/kg이었다. 가지의 흐르는 물 세척, 세척 후 찌기, 세척 후 볶기의 잔류량은 0.059, 0.065, 0.05 mg/kg이었다. 상추의 담금 물 세척, 흐르는 물 세척, 담금 후 흐르는 물 세척, 초음파세척, 데치기의 azoxystrobin의 잔류량은 각각 3.027, 7.513, 3.937, 5.761, 3.241 mg/kg이었다. 가지와 상추의 azoxystrobin 농약의 가공계수 및 감소율을 산출한 결과는 다음과 같았다. 가지의 경우, 흐르는 물 세척의 가공계수 및 감소율은 0.29, 71.1%, 찜 가공한 가지는 0.32, 68.0%, 볶음 가공한 가지는 0.24, 75.7%이었다. 상추의 경우, 담금 물 세척한 상추의 가공계수 및 감소율은 0.25, 75.3%, 흐르는 물 세척은 0.61, 38.9%, 담금 후 흐르는 물 세척은 0.32, 68.0%, 초음파세척은 0.47, 53.1%, 데치기는 0.26, 73.6%이었다. 가지와 상추 중 잔류농약은 세척 및 조리가공을 통해서 잔류농약 감소에 효과가 있는 것을 확인할 수 있었으며, 세척 후 조리과정을 진행할 시, 대부분의 농약이 제거됨을 확인하였다. 따라서, 세척 및 가공 후 azoxystrobin 가공계수를 위해 평가에 기초자료로 제공할 수 있을 것이다.

Keywords

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