京西稻糙米及精米中9种微量矿物质元素含量对比分析

Comparative analysis of 9 trace mineral elements in brown rice and polished rice of Jingxi rice

中文关键词:  京西稻  糙米  精米  矿物质元素  电感耦合等离子体发射光谱法

英文关键词:Jingxi rice  brown rice  polished rice  mineral elements  inductively coupled plasma atomic emission spectrometry

中文摘要:

      目的 比较京西稻糙米和精米中9种微量矿物质元素的含量差异。方法 20份京西稻稻谷样品脱壳而成的糙米和进一步加工得到的精米经微波消解法前处理后, 由电感耦合等离子体发射光谱法测定样品中钙、铜、铁、钾、镁、锰、钠、磷、锌9种微量矿物质元素的含量, 并对数据进行分析。结果 分析20份样品各元素的平均含量, 糙米中的镁、磷、钾、锰、钙、钠、铁、锌、铜元素含量分别的是精米的174.5%、147.1%、143.0%、138.2%、115.7%、113.2%、106.7%、96.6%、95.8%。结论 京西稻糙米中镁、磷、钾、锰的含量远高于精米, 糙米中钙、钠、铁的含量略高于精米, 而糙米中锌和铜的含量略低于精米。

英文摘要:

      Objective To compare of the content of 9 trace mineral elements in brown rice and polished rice of Jingxi rice. Methods After 20 samples of Jingxi rice were dehulled, brown rice and polished rice obtained by further processing were pre-treated by microwave digestion method. The content of calcium, copper, iron, potassium, magnesium, manganese, sodium, phosphorus and zinc in the samples was determined by inductively coupled plasma emission spectrometry and the data was analyzed. Results The average content of each element in 20 samples was analyzed. The elements of magnesium, phosphorus, potassium, manganese, calcium, sodium, iron, zinc and copper in brown rice were 174.5%, 147.1%, 143.0%, 138.2%, 115.7%, 113.2%, 106.7%, 96.6% and 95.8% of white rice, respectively. Conclusion The content of magnesium, phosphorus, potassium and manganese in Jingxi rice brown rice is much higher than that of polished rice. The content of calcium, sodium and iron in brown rice is slightly higher than that of polished rice, while the content of zinc and copper in brown rice is slightly lower than that of polished rice.