National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Key Laboratory for Agro-Products Nutritional Evaluation of Ministry of Agriculture and Rural Affairs, Laboratory of Quality and Safety Risk Assessment for Agro-Products Storage and Preservation of Ministry of Agriculture and Rural Affairs, Key Laboratory of Agro-Products Postharvest Handling of Ministry of Agriculture and Rural Affairs, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang International Scientific and Technological Cooperation Base of Health Food Manufacturing and Quality Control, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China.
Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China.
Int J Environ Res Public Health. 2020 Jun 26;17(12):4596. doi: 10.3390/ijerph17124596.
In this study, 41 common rice varieties and 211 selenium-rich rice varieties from ten representative areas in China were collected in 2017-2019. The selenium contents of rice were analyzed with optimized inductively coupled plasma mass spectrometry (ICP-MS). Selenium concentrations of common rice and selenium-rich rice ranges were 0.81-7.26 and 0.76-180.73 µg/100 g, respectively. The selenium contents in selenium-rich rice from different areas were significantly different ( < 0.001) while those in common rice from different areas were not. The selenium-rich rice in Harbin and Keshan showed the lowest selenium level and those from selenium-rich areas (Enshi and Ankang) were highest. Based on the estimation of the risk assessment software @risk7.0 (Palisade Corporation, New York, NY, USA), the consumption of selenium-rich rice can effectively increase dietary selenium intake for the population. However, the risk index of P95 (Percentile 95) selenium exposure at the tolerable upper intake level for children at 2-14 years old exceeded 100%, with potential risk currently. Therefore, the consumption of selenium-rich rice should be properly monitored for young children and adolescents.
在这项研究中，我们于 2017 年至 2019 年收集了来自中国十个代表性地区的 41 种常见水稻品种和 211 种富硒水稻品种。采用优化电感耦合等离子体质谱法（ICP-MS）分析了稻米中的硒含量。普通稻米和富硒稻米的硒浓度范围分别为 0.81-7.26 和 0.76-180.73μg/100g。不同地区富硒稻米的硒含量差异显著（<0.001），而不同地区普通稻米的硒含量则没有显著差异。哈尔滨和克山的富硒稻米硒含量最低，而来自富硒地区（恩施和安康）的稻米硒含量最高。基于风险评估软件@risk7.0（Palisade Corporation，纽约，NY，美国）的估计，食用富硒稻米可以有效增加人群的膳食硒摄入量。然而，对于 2-14 岁儿童，可耐受最高摄入量水平的 P95（百分位 95）硒暴露风险指数超过 100%，目前存在潜在风险。因此，对于幼儿和青少年，应该适当监测富硒稻米的食用情况。
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