Monitoring of Residual Pesticide Components in Fruits and Washing Effect in Citrus Fruit

Kyungai Park*, Soyoung Jeong, Chaeman Choi, Haewon Park,

Jeongmi Lee, Sangmi Lee, Insil Yu and Kwon Jeong

Gangbuk Agro-fishery Products Inspection Center

Seoul Metropolitan Government Research  Institute of Public Health and Environment

Residual pesticide components were monitored for 236 samples of fruits(14 species). Samples were collected from Gangbuk in Seoul during 13 months, from November 2014 to December 2015. Residual pesticides were detected in 15.3% of the samples and included in maximum residual limit(MRL).  The major species of residues detected in fruits are as following : chlorfenapyr, chlorpyrifos, cyprodinil, endosulfan, fludioxonil, imazalil, iprodione, and procymidone. Also the quantitative analysis of residual pesticide was performed  for pulp and peel of residual pesticide detected fruits. The residual pesticides were not detected for the pulp of whole test fruits. As a result, the safety for residual pesticide was confirmed. Citrus peel is used as a herbal tea or a herbal medicinal material. To remove pesticides in peel of citrus, water, 2% baking soda and 0.2% neutral detergent were used as cleaning solvents.  The citrus peel was washed with taping water for more than 30 seconds after 5 minutes, dipped in a solution. The removal effect of residual pesticides was in the order of water 22.4%, 2% baking soda 38.4% and neutral detergent 43.6%. The neutral detergent showed the greatest removal effect of residual pesticides.

Key word: fruit, peel, pulp, residual pesticide, removal effect, washing