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Daily Dietary Selenium Intake in a High Selenium Area of Enshi, China
School of Earth and Space Sciences, University of Science and Technology of China (USTC), Hefei 230026, Anhui, China
Advanced Lab for Eco-safety and Human Health, Suzhou Institute of USTC, Suzhou 215123, Jiangsu, China
Environmental Sciences Program, Southern Illinois University, Edwardsville, IL 62026, USA
Agricultural Research Service, United States Department of Agriculture, 9611 S. Riverbend Avenue, Parlier, CA 93648, USA
Jiangsu Bio-Engineering Research Centre of Selenium, Suzhou 215123, China
* Author to whom correspondence should be addressed.
Received: 4 January 2013; in revised form: 31 January 2013 / Accepted: 4 February 2013 / Published: 5 March 2013
Abstract: Enshi is a high selenium (Se) region in Hubei, China, where human selenosis was observed between 1958 and 1963. This study investigated the daily dietary Se intake of residents in Shadi, a town located 72 km northeast of Enshi City, to assess the risk of human selenosis in the high Se area. Foods consumed typically by the local residents and their hair samples were analyzed for total Se concentration. Concentrations of Se in different diet categories were as follows: cereals: 0.96 ± 0.90 mg kg−1 DW in rice and 0.43 ± 0.55 mg kg−1 DW in corn; tuber: 0.28 ± 0.56 mg kg−1 in potato and 0.36 ± 0.12 mg kg−1 in sweet potato; vegetables: ranging from 0.23 ± 1.00 mg kg−1 in carrot to 1.57 ± 1.06 mg kg−1 in kidney bean; animal proteins: 1.99 ± 1.11 mg kg−1 in chicken and egg. Based on the food Se concentrations and the daily per-capita consumption, the estimated daily Se intake in Shadi was 550 ± 307 µg per capita. Moreover, the Se concentrations in the hairs of local adult residents were 3.13 ± 1.91 mg kg−1 (n = 122) and 2.21 ± 1.14 mg kg−1 (n = 122) for females and males, respectively, suggesting that females might be exposed to higher levels of Se from daily cooking. Although there was no human selenosis occurrence in recent years, the high level of the daily Se intake suggested that the potential risk of selenosis for local residents, especially females, might be a matter of concern.
Keywords: Enshi; selenium; daily dietary intake; hair; selenosis
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Huang, Y.; Wang, Q.; Gao, J.; Lin, Z.; Bañuelos, G.S.; Yuan, L.; Yin, X. Daily Dietary Selenium Intake in a High Selenium Area of Enshi, China. Nutrients 2013, 5, 700-710.
Huang Y, Wang Q, Gao J, Lin Z, Bañuelos GS, Yuan L, Yin X. Daily Dietary Selenium Intake in a High Selenium Area of Enshi, China. Nutrients. 2013; 5(3):700-710.
Huang, Yang; Wang, Quanxin; Gao, Jin; Lin, Zhiqing; Bañuelos, Gary S.; Yuan, Linxi; Yin, Xuebin. 2013. "Daily Dietary Selenium Intake in a High Selenium Area of Enshi, China." Nutrients 5, no. 3: 700-710.