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正常人体内锌含量为2-3 g,仅次于铁,特别在组织中,锌含量是微量金属中最大者.通常,动物性食物中含量高,肉类(30~50ppm)、谷物、豆类(20~30 ppm)、海产物(20~30 ppm)、牡蛎(700~1,600 ppm)是良好的供给源.植物性食物含锌较少,一般在10 ppm以下,素食者易缺锌.某些中草药含有锌,其中以补骨脂(768 ppm)、制首乌(421 ppm)、女贞子(415 ppm)、仙茅(345 ppm)、枸杞子(360 ppm)为较高,人乳从初乳到2周为10ppm左右,以后急减(0.5~1.0 ppm),故乳儿易缺锌.
Normal human body zinc content of 2-3 g, second only to iron, especially in the organization, the zinc content is the largest of the trace metals.Usually, high content of animal foods, meat (30 ~ 50ppm), cereals, beans Cultivars (20-30 ppm), marine products (20-30 ppm), and oysters (700-1,600 ppm) are good sources of supply, while vegetable foods contain less zinc, typically less than 10 ppm, and vegetarians are vulnerable to zinc deficiency. Some Chinese herbal medicines contain zinc, of which psoralen (421 ppm), Ligustrum lucidum (415 ppm), Curculigo (345 ppm) and medlar (360 ppm) are higher for psoralen (768 ppm) Milk from the colostrum to 2 weeks for the 10ppm or so, after the sharp reduction (0.5 ~ 1.0 ppm), it is easy for children lack of zinc.