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

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)
Publication Information
Korean Journal of Food Science and Technology / v.35, no.4, 2003 , pp. 586-590 More about this Journal
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.
Keywords
washing solutions; removal rate of residual pesticides; perilla leaves;
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