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七、钴在微量元素中,只有钴必须以特殊结合形式——氰基钻胺,即维生素B_(12),供应,才能在人体内有生理作用。所以钴在人类营养中的问题主要是维生素B_(12)的膳食来源、供给、吸收问题,而不是钴本身的问题。所有一般膳食中含的钴只有很小一部分来自维生素B_(12),其钴含量与维生素B_(12)含量不一定有相关。FAO/WHO联合专家组在1970年发表了人体的维生素B_(12)需要量和建议的每日摄入量,并考虑到食物中影响这种维生素稳定性及其利用
Seven, cobalt In trace elements, only cobalt must be combined with a special form - cyanobicyclic amine, that vitamin B_ (12), supply, in order to have a physiological role in the human body. Therefore, the problem of cobalt in human nutrition is mainly the dietary source, supply and absorption of vitamin B_ (12), not the problem of cobalt itself. Only a very small proportion of the total dietary cobalt contained in the diet comes from vitamin B_ (12), and its cobalt content is not necessarily related to the vitamin B_ (12) content. In 1970, the Joint FAO / WHO Expert Group published the human vitamin B 12 requirement and recommended daily intake, taking into account the effects of this vitamin in food on its use and stability