动物蛋白对矿物质生物利用率影响的研究

Effect of animal resource proteins on availability of minerals

矿物质是影响人类身体健康的重要因素。旨在通过采用invitro体外消化模型研究几种动物蛋白钙、铁、锌含量及其溶出情况、对强化的钙、铁、锌溶出率的影响以及3种矿物质之间的相互作用,为进一步合理应用动物蛋白提供依据。研究结果表明,几种原料中,蛋黄钙、铁、锌含量水平均最高,但其生物利用率很低;乳清蛋白是膳食钙的良好来源,同时,也能促进强化的钙、铁吸收;蛋清矿物质含量较低,但其强化铁的溶出率较高。另外,强化钙对于蛋黄蛋白中铁和锌的吸收有明显的抑制作用,强化铁和强化锌则能明显提高其钙的利用。

Mineral is important for human health.Ingredients in food affect the bioavailability of minerals.The study is aimed at using protein reasonably by analysis of contents and availability of calcium,iron and zinc of protein,and effect of protein on solubility of fortified minerals with in vitro model.The results indicated that the protein from yolk has the highest contents of minerals among all materials,however,the solubility is very low.Whey protein has high content of calcium,and can promote the absorption of calcium and iron.Compared to proteins from other materials,albumen protein is low in minerals,and has high solubility of the fortifying iron.Fortified calcium has negative effect on the absorption of iron and zinc in yolk protein,while fortified iron and zinc can improve solubility of calcium in yolk protein.