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Nutrients 2013, 5(3), 700-710; doi:10.3390/nu5030700
Article

Daily Dietary Selenium Intake in a High Selenium Area of Enshi, China

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1 School of Earth and Space Sciences, University of Science and Technology of China (USTC), Hefei 230026, Anhui, China 2 Advanced Lab for Eco-safety and Human Health, Suzhou Institute of USTC, Suzhou 215123, Jiangsu, China 3 Environmental Sciences Program, Southern Illinois University, Edwardsville, IL 62026, USA 4 Agricultural Research Service, United States Department of Agriculture, 9611 S. Riverbend Avenue, Parlier, CA 93648, USA 5 Jiangsu Bio-Engineering Research Centre of Selenium, Suzhou 215123, China
* Author to whom correspondence should be addressed.
Received: 4 January 2013 / Revised: 31 January 2013 / Accepted: 4 February 2013 / Published: 5 March 2013
(This article belongs to the Special Issue Dietary Selenium and Health)
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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 Enshi; selenium; daily dietary intake; hair; selenosis
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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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.

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