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60年代初期,在中东地区发现了缺锌病人。其症状一般表现在:食欲减退,肝、脾肿大等。锌在人类为一种具有许多重要生化功能的微量元素,它参与蛋白质合成、核酸代谢、基因表达和免疫功能。锌是体内100多种酶类的辅因子,并作为蛋白质、激素和核苷酸的结构成分,所以其重要地位不言而喻。 锌存在于许多食物中,海洋食物、肉类、硬壳果类和乳品中含量较丰。蚂蚁制品内含锌量亦较多。值得注意的是高纤维膳食可降低食物中锌的生物利用度,使锌不能较好地被吸收利用。
In the early 1960s, zinc-deficient patients were found in the Middle East. The symptoms are generally manifested in: loss of appetite, liver, splenomegaly and so on. Zinc is a trace element in humans that has many important biochemical functions. It is involved in protein synthesis, nucleic acid metabolism, gene expression and immune function. Zinc is a cofactor of more than 100 enzymes in the body and serves as a structural element of proteins, hormones and nucleotides, so its importance is self-evident. Zinc is present in many foods, and is abundant in marine foods, meats, crustaceans and dairy products. Ant products also contain more zinc. It is noteworthy that high-fiber diet can reduce the bioavailability of zinc in food, so that zinc can not be better absorbed.