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本文对锌和铜这两种微量元素的生化功能、代谢途径及对新生儿、婴幼儿的营养价值做一综述。铜生化功能铜存在于大多数动、植物食品中,人类很少发生铜缺乏。哺乳类动物具有多种特异的含铜酶,细胞色素氧化酶是最有代表性的一种含铜酶,它是电子传递链的终末氧化酶,此酶催化分子氧还原为水;并通过合成ATP贮存能量。血浆铜蓝蛋白是一种蓝色的糖蛋白,每克蛋白含3mg的铜,它的主要功能是将体内储存的Fe~(+2)氧化为Fe~(+3)。Fe~(+3)掺入到运铁蛋白
This article reviews the biochemical functions, metabolic pathways and the nutritional value of the two trace elements, zinc and copper, for newborns and infants. Copper biochemical functions Copper is present in most animal and plant foods, and humans are seldom copper deficient. Mammals have a variety of specific copper-containing enzymes, cytochrome oxidase is the most representative of a copper-containing enzyme, it is the electron transport chain terminal oxidase, the enzyme catalytic molecular oxygen to water; and by Synthesis of ATP storage energy. Ceruloplasmin is a blue glycoprotein containing 3 mg of copper per gram of protein. Its main function is to oxidize Fe ~ (+2) stored in the body to Fe ~ (+3). Fe ~ (+3) into transferrin