Washing effects of limonene on pesticide residues in green peppers

Authors

  • Hai-Yan Lu,

    1. Jiangsu Academy of Agricultural Sciences; Key Lab of Food Quality and Safety of Jiangsu Province – State Key Laboratory Breeding Base; Key Laboratory of Control Technology and Standard for Agro-product Safety and Quality, Ministry of Agriculture, China; Key Lab of Agro-product Safety Risk Evaluation (Nanjing), Ministry of Agriculture, Jiangsu Nanjing 210014, China
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  • Yan Shen,

    1. Jiangsu Academy of Agricultural Sciences; Key Lab of Food Quality and Safety of Jiangsu Province – State Key Laboratory Breeding Base; Key Laboratory of Control Technology and Standard for Agro-product Safety and Quality, Ministry of Agriculture, China; Key Lab of Agro-product Safety Risk Evaluation (Nanjing), Ministry of Agriculture, Jiangsu Nanjing 210014, China
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  • Xing Sun,

    1. Jiangsu Academy of Agricultural Sciences; Key Lab of Food Quality and Safety of Jiangsu Province – State Key Laboratory Breeding Base; Key Laboratory of Control Technology and Standard for Agro-product Safety and Quality, Ministry of Agriculture, China; Key Lab of Agro-product Safety Risk Evaluation (Nanjing), Ministry of Agriculture, Jiangsu Nanjing 210014, China
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  • Hong Zhu,

    1. Jiangsu Academy of Agricultural Sciences; Key Lab of Food Quality and Safety of Jiangsu Province – State Key Laboratory Breeding Base; Key Laboratory of Control Technology and Standard for Agro-product Safety and Quality, Ministry of Agriculture, China; Key Lab of Agro-product Safety Risk Evaluation (Nanjing), Ministry of Agriculture, Jiangsu Nanjing 210014, China
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  • Xian-Jin Liu

    Corresponding author
    • Jiangsu Academy of Agricultural Sciences; Key Lab of Food Quality and Safety of Jiangsu Province – State Key Laboratory Breeding Base; Key Laboratory of Control Technology and Standard for Agro-product Safety and Quality, Ministry of Agriculture, China; Key Lab of Agro-product Safety Risk Evaluation (Nanjing), Ministry of Agriculture, Jiangsu Nanjing 210014, China
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Correspondence to: Xian-Jin Liu, Key Lab of Agro-product Safety Risk Evaluation (Nanjing), Ministry of Agriculture, Jiangsu Nanjing 210014, China. E-mail: 54521955@qq.com

Abstract

Background

The presence of pesticide residues in food has caused much concern. The low health risks and environmental impacts of limonene make it a very interesting solvent for use in green chemistry. Washing effects of limonene on pesticide residues of methyl chlorpyrifos, chlorothalonil, chlorpyrifos, fenpropathrin and deltamethrin were investigated in green pepper.

Results

Results showed that washing with a low concentration of limonene for 5 min (where LOQ is limit of quantitation) caused 53.67%, <LOQ, 64.29%, 68.69% and 66.22% loss of the above pesticides, respectively, while corresponding values of washing with a high concentration were 84.64%, <LOQ, 90.46%, 89.00% and 89.36%, respectively. Washing with a low concentration of limonene for 10 min produced 55.90%, <LOQ, 66.19%, 72.08% and 73.25% loss, respectively, while corresponding values of washing with a high concentration were 94.42%, <LOQ, 96.58%, 92.04% and < LOQ, respectively. The reductions due to washing with tap water (for 10 min) and the emulsion with only egg yolk lecithin (at high concentration for 10 min) were 25.18 %, 37.83%, 21.84%, 20.87%, 13.86% and < LOQ, 59.70%, 54.09%, 54.76%, 54.47%, respectively.

Conclusion

The data indicated that washing with a low concentration of limonene for 5 min was the optimal treatment for elimination of pesticide residues in green pepper, considering effect and treatment time as well as cost. © 2013 Society of Chemical Industry

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