Pesticide residue removal from vegetables by ozonation

in Sciences Citation Index(SCI), 科學引文索引資料庫(SCI)
標題Pesticide residue removal from vegetables by ozonation
出版類型SCI(Sciences Citation Index)
AuthorsKuo Wen-Chien, 陳金英, Y. J. L., & Kuo Wen-Chien 郭文健
出版日期2013 / 2

A novel machine was developed to remove pesticide residues from vegetables using ozone. This domestic-scale vegetable cleaner consists of a closed cleaning chamber, an ozone generator, a water recirculation pump, and an oxidation-reduction potential (ORP) electrode. Two vegetables, Chinese white cabbage and green-stem bok choy, and three pesticides, permethrin (trans-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropane-carboxylate), chlorfluazuron (1-[3,5-dichloro-4-(3-chloro-5-trifluoromethyl-2-pyridyloxy)phenyl]-3-(2, 6-difluorobenzoyl) urea), and chlorothalonil (tetrachloroisophthalonitrile) were used in tests. Cleaning for 15 min with pump recirculation removed 51% of chlorfluazuron and 53% of chlorothalonil. When the ozone production rate was 250 mg/h, removal efficiencies were 60% for chlorfluazuron and 55% for chlorothalonil, increases of 2-9% over pump recirculation only. When the ozone production rate was 500 mg/h, removal efficiencies were 75% for chlorfluazuron and 77% for chlorothalonil; increases of 24% over pump recirculation only. After the ozone treatment, all the pesticide residuals met the Standards for Pesticide Residue Limits in Foods. (C) 2012 Elsevier Ltd. All rights reserved.

期刊名稱Journal of Food Engineering
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