大米淘洗过程中7种矿物元素损失研究

目的]研究稻米淘洗次数与微量元素含量关系，评价大米清洗过程矿物成分损失情况。方法]根据稻米的淘洗过程，测定不同淘洗次数下大米的各种营养元素含量。结果]试验得出，各种营养成分在大米中不是均匀分布的，在淘洗过程中，营养成分将不同程度地流失，且淘洗次数越多，损失越大。结论]大米在淘洗过程中各种营养元素均有不同程度损失，因此改进大米的加工过程，生产和食用清洁米，对于有效保留大米中营养元素具有重要意义。

Study on Loss of Seven Mineral Elements during Rice Elutriation Process

Objective ] To study on the relationship between rice elutriation times and mineral element contents, evaluate loss of mineral com- ponents during elutriation. Method] The content of element was determined in different elutriation degree. Result] The result shows that with the more times to elutriate, the more to lose. Conclusion] Various nutrients were lost in washing process. So improvement of rice pro- cessing, production and consumption of clean rice has significance on effectively retaining nutrient elements in rice.