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Open AccessArticle

Risk Assessment on Dietary Exposure to Aflatoxin B1 in Post-Harvest Peanuts in the Yangtze River Ecological Region

by Xiaoxia Ding 1,2,3,4,5,†, Linxia Wu 1,2,3,†, Peiwu Li 1,2,3,4,5,*, Zhaowei Zhang 1,2,4,5, Haiyan Zhou 1,4,5, Yizhen Bai 1,4,5, Xiaomei Chen 1,3,5 and Jun Jiang 1,3,5
1
Oil Crops Research Institute, Chinese Academy of Agriculture Science, Wuhan 430062, China
2
Laboratory of Quality & Safety Risk Assessment for Oilseed Products (Wuhan), Ministry of Agriculture, Wuhan 430062, China
3
Key laboratory of Detection for Mycotoxins, Ministry of Agriculture, Wuhan 430062, China
4
Key Laboratory of Biology and Genetic Improvement of Oil Crop, Ministry of Agriculture, Wuhan 430062, China
5
Quality Inspection &Test Center for Oilseed Products, Ministry of Agriculture, Wuhan 430062, China
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Jiujiang Yu
Toxins 2015, 7(10), 4157-4174; https://doi.org/10.3390/toxins7104157
Received: 24 July 2015 / Revised: 16 September 2015 / Accepted: 8 October 2015 / Published: 15 October 2015
(This article belongs to the Special Issue Mycotoxins and Human Diseases 2015)
Based on the 2983 peanut samples from 122 counties in six provinces of China’s Yangtze River ecological region collected between 2009–2014, along with the dietary consumption data in Chinese resident nutrition and health survey reports from 2002 and 2004, dietary aflatoxin exposure and percentiles in the corresponding statistics were calculated by non-parametric probability assessment, Monte Carlo simulation and bootstrap sampling methods. Average climatic conditions in the Yangtze River ecological region were calculated based on the data from 118 weather stations via the Thiessen polygon method. The survey results found that the aflatoxin contamination of peanuts was significantly high in 2013. The determination coefficient (R2) of multiple regression reflected by the aflatoxin B1 content with average precipitation and mean temperature in different periods showed that climatic conditions one month before harvest had the strongest impact on aflatoxin B1 contamination, and that Hunan and Jiangxi provinces were greatly influenced. The simulated mean aflatoxin B1 intake from peanuts at the mean peanut consumption level was 0.777–0.790 and 0.343–0.349 ng/(kg·d) for children aged 2–6 and standard adults respectively. Moreover, the evaluated cancer risks were 0.024 and 0.011/(100,000 persons·year) respectively, generally less than China’s current liver cancer incidence of 24.6 cases/(100,000 persons·year). In general, the dietary risk caused by peanut production and harvest was low. Further studies would focus on the impacts of peanut circulation and storage on aflatoxin B1 contamination risk assessment in order to protect peanut consumers’ safety and boost international trade. View Full-Text
Keywords: aflatoxin B1; peanut; dietary exposure; Yangtze River ecological region; climate aflatoxin B1; peanut; dietary exposure; Yangtze River ecological region; climate
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MDPI and ACS Style

Ding, X.; Wu, L.; Li, P.; Zhang, Z.; Zhou, H.; Bai, Y.; Chen, X.; Jiang, J. Risk Assessment on Dietary Exposure to Aflatoxin B1 in Post-Harvest Peanuts in the Yangtze River Ecological Region. Toxins 2015, 7, 4157-4174.

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