桑枝栽培榆黄蘑子实体的氨基酸组成分析及蛋白质营养价值评价

Amino Acid Composition Analysis and Protein Nutritional Value Evaluation of the Pleurotus citrinopileatus Fruit Bodies Cultivated by Morus alba Branches

对以桑枝栽培的榆黄蘑子实体中蛋白质、氨基酸含量及相关指标进行分析和评价,检测得到桑枝榆黄蘑子实体蛋白质含量为26.60 g·100^(-1)·g^(-1),属于高蛋白食品;含有18种氨基酸,种类齐全,较接近FAO/WHO模式的标准;支链氨基酸和芳香族氨基酸总量的比值为2.63;经氨基酸评分(amino acid score,AAS)、化学评分(chemical score,CS)、氨基酸比值系数评分(score of ratio coefficient of amino acid,SRCAA)3种指标评分,其第一限制氨基酸均为胱氨酸+蛋氨酸(Cys+Met);以FAO/WHO模式评价,桑枝榆黄蘑子实体所含蛋白质是优质蛋白,且营养价值较高。

The protein and amino acid in the fruit body of Pleurotus citrinopileatus cultivated by Morus alba branches were analyzed and evaluated.The protein content of the fruit bodies of P.citrinopileatus is 26.60 g·100^(-1)·g^(-1),thus being a high protein food.The fruit bodies contain 18 amino acids,with a complete range of amino acids,which were close to the FAO/WHO mode standard.The ratio of BCAA/AAA is 2.63,the first limiting amino acid score for AAS,CS and SRCAA indicators is Cys+Met.Evaluated in the FAO/WHO model,its values showed that the proteins contained in the fruit bodies of P.citrinopileatus were high quality proteins and their protein nutritional value was high.