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用等离子体发射光谱仪(ICP-AES)分析了在同地繁殖的国内外252份水稻品种糙米中的N、P、K、S、Mg、Ca、Mn、Fe、Na、Al、Cu、B、Ba、Mo、Sr、V、Eu 18种无机元素,比较了其中有色米(33份红米、9份紫米)与白米(210份)间的18种元素含量和12个无机元素的养分供需率的差异。结果表明:如按糙米元素含量或精米元素养分供需率比较,不能如实反映其营养特征。因有色米食用是包括种皮的糙米而精白米是去糙的精米。用有色糙米与精白米的元素养分供需率比较则12个元素中除Ba、V仍低于精白米,Sr无显著差异外,其它元素均高于精白米。有色米中红米的Mg、Ca、Ba、V和Fe高于紫米。所以在评估大米元素营养价值时要注意其食用部分及其可利用性。
The contents of N, P, K, S, Mg, Ca, Mn, Fe, Na, Al, Cu, B and Ca in 252 rice varieties grown at the same place in China were analyzed by using ICP- Ba, Mo, Sr, V, Eu. The content of 18 elements and the nutrient supply and demand of 12 inorganic elements were compared among the colored rice (33 red rice, 9 purple rice) and white rice Rate difference. The results showed that: according to brown rice elements or milled rice nutrient supply and demand, can not accurately reflect the nutritional characteristics. Due to colored rice consumption is the brown rice which includes the seed coat and the refined rice is the rough polished rice. Compared with the elemental nutrient supply and demand of colored brown rice and white rice, all the 12 elements except Ba and V are still lower than that of white rice, and Sr is no significant difference, the other elements are higher than that of white rice. The red, green and red rice have higher Mg, Ca, Ba, V and Fe than purple rice. Therefore, in assessing the nutritional value of rice elements should pay attention to its edible part and its availability.