Analysis of Pesticide Residues in Wolfberry and Dietary Exposure Risk Assessment

Jiandong Yu, Institute for Control of Chinese Traditional Medicine and Ethnic, National Institutes for Food and Drug Control, Beijing, China (yujiandong@nifdc.org.cn)

OBJECTIVE To assess the levels of pesticide residues in Wolfberry and evaluate the intake exposure of pesticide residues. METHODS A total of 332 kinds of pesticides in 40 samples collected from different areas were determined and dietary intake exposure risks were assessed. Risk assessment was conducted by using deterministic approach for the pesticides with detection rate over 20%. RESULTS The analysis showed that 94% of the samples contained low levels of pesticide residues, and 85% of the samples contained five or more kinds of pesticide residues. Totally 31 pesticides were detected, most of which have low or moderate toxicity. However, carbofuran which is forbidden in Chinese herbs was detected. Risk assessment found that carbofuran had the highest acute risk and chronic risk, with risk probabilities of 89.523% and 2.000%, respectively. As the values were below 100%, it was indicated that the threat of this pesticide in Wolfberry to human health is acceptable. CONCLUSION The maximum residue limit of carbofuran in Wolfberry should be established as soon as possible. In this study,deterministic model is used to assess the risk of pesticide residues in Chinese Wolfberry, with the aim to propose an appropriate assessment model for traditional Chinese medicine and provide data for maximum residue limit.

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Abstract Reference & Short Personal Biography of Presenting Author

Mr. Jiandong Yu is the deputy director of the Institute for Control of Chinese Traditional Medicine and Ethnic Medicine.He received his  bachelor degree in the pharmacetical analysis,Beijing University of Traditional Chinese Medicine and Pharmacy  in 1991. After graduation, he worked in Institute for Control of Chinese Traditional Medicine and Ethnic Medicine (ICCTMEM), National Institutes for Food and Drug Control (NIFDC) until now. His research has been focused on quality and safety evaluation of traditional Chinese medicine.So far, he has published  49 scientific publications.He is also a member of the Chinese Medicine Quality and Safety Professional Committee and the National Standardization Management Committee.

Reference

[1]Jinjing Xiao,Xing Xu,Fan Wang,Jinjuan Ma,Min Liao,YanhongShi, Qingkui Fang, Haiqun Cao. Analysis of exposure to pesticide residues from Traditional Chinese Medicine. Journal of Hazardous Materials 2019;365: 857-867.