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锌、硒都是人体必需元素,摄入不足或过量,均会产生病变。摄取这些元素的主要渠道之一是食品。国内外对食品中微量元素锌、硒含量的研究相当广泛和活跃。提供食品中微量元素锌、硒本底含量,不论从研究它们的营养生理,还是研究它们对食品的污染,都有重要的意义。经测定宁夏7大类20种食品中锌、硒基底含量如下。
Zinc, selenium are essential elements of the human body, inadequate intake or excess, will produce lesions. One of the main sources of these elements is food. Domestic and foreign food trace elements zinc, selenium content is quite extensive and active. Providing trace elements zinc and selenium content in foods has important meanings in terms of studying their nutritional physiology and studying their contamination of foodstuffs. The determination of Ningxia 7 categories 20 kinds of food zinc, selenium content is as follows.