• Korean Journal of Food Science and Technology
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• v.32 no.4
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• pp.763-771
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• 2000

The 88 kinds of pesticide residues were analyzed in 12 kinds(289 samples) of fruits and vegetables brought at department store & mart in Kwangju from Feburary to September in 1999. The detection rate of pesticide residue in 12 kinds(289 samples) of fruits and vegetables was 21.1%, and the rate exceeds standard was 5.2%. The order of highly exceed rate in fruits and vegetables were perilla leaf, lettuce, spinach and chickery. The order of pesticide which founded frequently in fruits and vegetables were procymidone, endosulfan, vinclozoline, chlorpyrifos, cyprermethrin, pirimiphos-M, fenvalerate, fenarimol, and monocrotophos. And that of pesticide which exceed highly standard were procymidone, vinclozolin, endosulfan, pirimiphos-M, fenarimol, monocrotophos, etc. Eight different washing methods were compared for removal efficiencies of residual pesticides(procymidone, vinclozoline) on the perilla leap, the lettuce, the spinach, the strawberry, and the minitomato. Residual pesticides such as procymidone and vinclozoline were removed most efficiently by ultrasonic washing.

• Journal of agricultural medicine and community health
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• v.21 no.2
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• pp.159-171
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• 1996

It is investigated to determine the removal efficiency of organic - phosphorus insecticide residues in lettuce by washing processes, the 5 washing solution (stagnant tap water, flowing tap water, alkaline solution, acidic solution) were used with the washing time(10, 30, 50sec) and frequencies(1, 2, 3 washing, 2 rinsing). The removal efficiency of residual pesticides by 5 washing methods was increased on the more washing time and frequency, and also was the highest on the 3 times washing for each 50 sec. The removal rate with stagnant tap water was 33.7% of Diazinon, 45.7% of Dimethoate and 24.6% of Fenitrothion, but 29.4% of Diazinon, 37.7% of Dimethoate and 24.5% of Fenitrothion with flowing tap water. Therefore, the former was significantly higher effective than the latter one. The removal rate of residual pesticides with alkaline solution showed 32.1% of Diazinon, 49.5% of Dimethoate and 29.9% of Fenitrothion, and 30.4% of Diazinon, 36.4% of Dimethoate and 21.0% of Fenitrothion with acidic solution. The washing efficiency of neutral detergent showed the most effective result than others with 47.1% of Diazinon, 58.0% of Dimethoate and 39.5% of Fenitrothion. Consequently, it's appeared that the neural detergent washing was the most effective method on the 3 times washing for each 50 sec.

• The Korean Journal of Pesticide Science
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• v.10 no.2
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• pp.99-106
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• 2006

Chlorothalonil and imidacloprid sprayed onto the green peppers were degraded more faster at outdoor than in greenhouse. These results were affected by dew and photodegration, considering no rain during the experimental period. Chlorothalonil, esfenvalerate and imidacloprid in green pepper, green twist pepper and sweet pepper did not show any residual pattern, because green peppers are one of the continuous harvesting crops and pesticides could not be sprayed homogeneously on them. When green peppers were pickled with soy sauce and green twist peppers were fried with vegetable oil, the amounts of pesticides such as alpha-cypermethrin, bifenthrin, chlorfenapyr, esfenvalerate and imidacloprid were diminished to the levels of about $30{\sim}71$ and $20{\sim}41%$, respectively. Esfenvalerate and imidacloprid could not be detected in 2 month-old hot pepper paste. The removal rates of pesticide residues in leaves of green peppers were about $22{\sim}37%$ by washing, about $74{\sim}95%$ by parboiling, and about $17{\sim}55%$ by drying after parboiling.