Estimated assessment of cumulative dietary exposure to organophosphorus residues from tea infusion in China.
10.1186/s12199-018-0696-1
- Author:
Pei CAO
1
;
Dajin YANG
2
;
Jianghui ZHU
2
;
Zhaoping LIU
2
;
Dingguo JIANG
2
;
Haibin XU
3
Author Information
1. National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, No 27, Nanwei Road, Xicheng District, Beijing, 100050, China.
2. Risk Assessment of Division One, China National Center for Food Safety Risk Assessment, No 37, Building 2, Guangqu Road, Chaoyang District, Beijing, 100021, China.
3. Risk Assessment of Division One, China National Center for Food Safety Risk Assessment, No 37, Building 2, Guangqu Road, Chaoyang District, Beijing, 100021, China. hbxu1231602@cfsa.net.cn.
- Publication Type:Journal Article
- Keywords:
Cumulative dietary exposure;
Organophosphorus residues;
Risk assessment;
Tea infusion
- MeSH:
Adolescent;
Adult;
Aged;
Aged, 80 and over;
China;
Dietary Exposure;
analysis;
Female;
Humans;
Male;
Middle Aged;
Organophosphorus Compounds;
analysis;
Pesticide Residues;
analysis;
Risk Assessment;
methods;
Tea;
chemistry;
Young Adult
- From:Environmental Health and Preventive Medicine
2018;23(1):7-7
- CountryJapan
- Language:English
-
Abstract:
BACKGROUND:China has the world's largest tea plantation area in the world. To sustain high yields of the tea, multiple pesticides are used on tea crops to control pests. Organophosphorus (OP) pesticides are among the most widely used types of agricultural pesticides in China. As tea is a significant potential source of exposure to pesticide residues, the public concern has increased in relation to pesticide residues found in tea in China. The aim of the study was to estimate cumulative dietary exposure to OP residues from tea infusion for Chinese tea consumers to determine whether exposure to OP residues from tea infusion is a cause of health concern for tea consumers in China.
METHODS:OP residue data were obtained from the China National Monitoring Program on Food Safety (2013-2014), encompassing 1687 tea samples from 12 provinces. Tea consumption data were obtained from the China National Nutrient and Health Survey (2002), comprising 506 tea consumers aged 15-82 years. The transfer rates of residues from tea leaves into tea infusions were obtained from the literature. The relative potency factor (RPF) approach was used to estimate acute cumulative exposure to 20 OP residues from tea infusion using methamidophos as the index compound. Dietary exposure was calculated in a probabilistic way.
RESULTS:For tea consumers, the mean and the 99.9th percentile (P99.9) of cumulative dietary exposure to OP residues from tea infusion equalled 0.08 and 1.08 μg/kg bw/d. When compared with the acute reference dose (ARfD), 10 μg/kg bw/d for methamidophos, this accounts for 0.8 and 10.8% of the ARfD.
CONCLUSIONS:Even when considering OP residues from vegetables, fruits and other foods, there are no health concerns based on acute dietary exposure to OP residues from tea infusion. However, it is necessary to strengthen the management of the OP pesticides used on tea in China to reduce the risk of chronic dietary exposure to OPs from tea infusion.
