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锌能使细胞和活体内某些生物学过程加速,在生命活动中起极重要的作用。在各种脱氢酶、醛缩酶、肽酶、磷酸酶、异构酶、转磷酸酶、碳酸酐酶和天冬氨酸转氨甲酰酶中均含有锌。这些酶参与脂肪、蛋白质和碳水化合物的代谢,并参与核酸的分解和合成。锌影响细胞膜的通透性,与钾离子有竞争作用。锌对许多内分泌腺的活动有影响。锌维持机体的正常代谢和发育过程。锌增强肝脏的合成能力和细胞对病毒的敏感性,并参与解毒,从而改善机体的防御能力。对锌在机体中的平衡调节机制研究较少。正常情况下锌的吸收系数平均约为33%。锌的需要量与吸收量之间存在明显相关。锌在小肠的吸收明显受组织锌浓度、膳食锌摄入量和胃肠道中促进和抑制锌吸收的其他食物成分的影响。已证明,人体中锌的吸收和维持随着蛋白
Zinc can accelerate certain biological processes in cells and in vivo and play an extremely important role in life activities. Zinc is contained in various dehydrogenases, aldolase, peptidase, phosphatase, isomerase, transphosphatase, carbonic anhydrase and aspartate transcarbamylase. These enzymes are involved in the metabolism of fats, proteins and carbohydrates and are involved in the breakdown and synthesis of nucleic acids. Zinc affects cell membrane permeability and competes with potassium ions. Zinc has an effect on the activity of many endocrine glands. Zinc maintains the body’s normal metabolism and developmental processes. Zinc enhances liver synthesis and cell sensitivity to the virus and is involved in detoxification to improve the body’s defenses. There is little research on the balance regulation mechanism of zinc in the body. Under normal conditions, the absorption coefficient of zinc averages about 33%. There is a clear correlation between zinc requirement and absorption. The absorption of zinc in the small intestine is significantly affected by the tissue zinc concentration, dietary zinc intake and other food components that promote and inhibit zinc absorption in the gastrointestinal tract. It has been demonstrated that the absorption and maintenance of zinc in the body follows the protein