Department of Biological Sciences, Class of 1978 Life Sciences Center, 78 College Street, Dartmouth College, Hanover, NH 03755 USA.
Department of Earth Sciences, 19 Fayerweather Hill Road, Dartmouth College, Hanover, NH 03755 USA.
Food Chem. 2018 Jun 30;252:258-264. doi: 10.1016/j.foodchem.2018.01.120.
For individuals following a gluten-free (GF) diet, rice is commonly the major grain. People following a GF diet have a higher arsenic burden than the general population. We conducted a multielemental market basket study of GF and gluten containing ingredients and prepared foods (Mn, Fe, Ni, Cu, Zn, Cr, Co, Se, Cd, Sb, Pb, total As, As species, total Hg and methylmercury). Foods containing rice were significantly higher in As, Hg and Pb and lower in Se, Fe, Cu and Zn. Wheat-based foods were higher in Cd. Mercury concentrations were low (<3.5 ng/g); speciation was predominantly methylmercury. Arsenic and mercury in rice were correlated. GF foods contained significantly more As and Hg. Eating a wide variety of GF grains may reduce contaminant exposure and increase micronutrient status compared to a rice-based GF diet.
对于遵循无麸质（GF）饮食的个人来说，大米通常是主要的谷物。遵循 GF 饮食的人比一般人群砷负荷更高。我们对 GF 和含麸质的成分以及准备食品进行了多元素市场篮子研究（Mn、Fe、Ni、Cu、Zn、Cr、Co、Se、Cd、Sb、Pb、总砷、砷形态、总汞和甲基汞）。含大米的食物中砷、汞和铅含量明显较高，而硒、铁、铜和锌含量较低。以小麦为基础的食物中镉含量较高。汞浓度较低（<3.5ng/g）；形态主要为甲基汞。大米中的砷和汞呈正相关。GF 食品中含有更多的砷和汞。与以大米为基础的 GF 饮食相比，食用各种 GF 谷物可能会降低污染物暴露并改善微量营养素状况。
