工厂化栽培金耳的氨基酸组成及蛋白质营养评价

Amino acid composition and nutritional evaluation of protein of industrial cultivated Naematelia aurantialba

为研究工厂化栽培金耳的氨基酸特征,评价其蛋白质营养价值,进行工厂化栽培金耳的氨基酸组成的测定,并基于现行国际模式,采用系统的模型评价其蛋白质品质。试验结果:金耳的蛋白含量为9.2 g/100g(干重),共检测到16种氨基酸(色氨酸未检测,半胱氨酸未检出),其中甜味氨基酸的含量高达4.4785 g/100g(干重),占总氨基酸的比率达41.5%,鲜味氨基酸的含量达4.9746 g/100g(干重),占总氨基酸的比率达46.09%;必需氨基酸占总氨基酸的比率为48.94%,必需氨基酸与非必需氨基酸的比值为95.85%,均高于FAO/WHO的标准;但氨基酸组成不平衡,蛋氨酸和苯丙氨酸异常丰富,赖氨酸和异亮氨酸含量相对缺乏。

In evaluate the nutritional value of protein of industrial cultivated "Jiner"(Naematelia aurantialba), the amino acid composition and protein contents of industrial cultivated "Jiner" were analyzed. The contents of taste-active amino acids were determined and the nutritional value of proteins was assessed by calculating amino acid score(AAS), chemical score(CS), ratio coeffifient(RC) and score of ratio coeffifient of amino acid(SRC). The results showed that the content of protein in an industrial cultivated "Jiner" were 9.2 g/100 g(DW). The contents of sweet and flavor amino acids were 4.4785 g/100 g and 4.9746 g/100 g, respectively. The balance of the amino acid of industrial cultivated "Jiner" was limited. The dispersions of the amino acid score(AAS) and chemical score(CS) were high. Because the contents of Leu and Ile is lower, the first limiting amino acid of ASS and CS were Leu and Ile resperctively. But there were rich Met and Phe in the protein in industrial cultivated "Jiner". There was what causes the imbalance of amino acid in the protein of "Jiner".