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近年发现,我国有些地区有程度不等的锌缺乏现象存在。据北京市11所托幼机构303名1～6小儿发锌的测定值分析,低于我国发锌正常值下限119ppm的占65.7％,而低于50ppm的竟达15％。某托幼机构小儿全日摄入锌量仅为应摄取量标准的一半左右,严重地影响着小儿的生长发育和健康成长。因此各有关部门正准备在食品中强化锌。但是,锌和微量必需元素铁、铜之间有相互制约的关系,prasad等曾报道:锌强化到膳食中或作治疗用时,能限制铁和铜的吸收利用,每日口服200毫克锌即可导致贫血。亦有报道,人对铁的
In recent years, it has been found that there are zinc deficiencies in some areas in our country. According to the analysis of the measured values of zinc in 303 children 1 to 6 in 11 institutions in Beijing, 65.7% of them were below the lower limit of the normal value of hair zinc in our country and 15% below 50ppm. A nursery-child institution intake of zinc throughout the day is only about half of the standard intake, a serious impact on children’s growth and development and healthy growth. Therefore, the relevant departments are preparing to strengthen the zinc in food. However, zinc and microelements essential elements of iron, copper, there is a mutual restraint relationship, prasad, etc. have been reported: zinc fortified into the diet or for treatment, can limit the absorption of iron and copper use, daily oral zinc 200 mg can Cause anemia. It has also been reported that people are iron