除了要考虑各种食品的微量元素含量外,还要密切注意各类影响微量元素生物利用率的饮食因素,也就是膳食中的微量元素能否被吸收、运转到作用部位而成为有生理活性的成分。一般来说,存在或混合于动物性食物中的微量元素,比存在或混合于植物性食物中者吸收利用率要高。比如蔬菜及 In addition to considering the trace element content of various foods, it is also necessary to pay close attention to various dietary factors that affect the bioavailability of trace elements, that is, whether trace elements in the diet can be absorbed and transported to the site of action to become physiologically active ingredient. In general, trace elements present or mixed in animal foods have higher absorption and utilization rates than those present or mixed in plant foods. Such as vegetables and