孙合群，覃先武，胥 怀，李 沛，彭 颖*

（安琪酵母股份有限公司，湖北 宜昌 443003）

摘要：本研究对小麦蛋白粉、大豆蛋白粉、乳清蛋白粉和酵母蛋白粉的氨基酸种类与含量进行检测，并对其水解氨基酸进行分析与评价。得到结论：小麦蛋白粉、大豆蛋白粉、乳清蛋白粉和酵母蛋白粉的必需氨基酸含量分别为22.91%、31.63%、46.01%和36.30%，其中乳清蛋白粉和酵母蛋白粉的必需氨基酸的含量均高于FAO/WHO 提出的氨基酸标准模式36.00%。另外，与鸡蛋蛋白质的必需氨基酸组成相比，小麦蛋白质缺乏赖氨酸、苏氨酸和含硫氨基酸；大豆蛋白质缺乏含硫氨基酸；乳清蛋白质缺乏苯丙氨酸+酪氨酸；酵母蛋白质缺乏含硫氨基酸和色氨酸，因此在开发产品时4 种蛋白质适合复配使用，以使必需氨基酸的种类和含量更完全。

关键词：小麦蛋白粉；大豆蛋白粉；乳清蛋白粉；酵母蛋白粉；氨基酸评价

Study on Amino Acid Determination and Nutritional Evaluation of 4 Kinds of Proteinsfrom Different Sources

SUN He-qun，QIN Xian-wu，XU Huai，LI Pei，PENG Ying*

（Angel Yeast Co.，Ltd.，Yichang 443003，China）

Abstract: In this study，the kinds and contents of amino acids in wheat protein powder，soybean protein powder，whey protein powder and yeast protein powder were detected，and their hydrolyzed amino acids were analyzed andevaluated. It was concluded that the essential amino acid contents of wheat protein powder，soybean protein powder，wheyprotein powder and yeast protein powder were 22.91%，31.63%，46.01% and 36.30%. The contents of essentialamino acids in whey protein powder and yeast protein powder were 36.00% higher than the amino acid standardmodel proposed by FAO/WHO. In addition，compared with egg protein，wheat protein lacks lysine，threonine andsulfur- containing amino acids. Soybean protein lacks sulfur- containing amino acids；Whey protein deficiency ofphenylalanine+tyrosine；Yeast proteins lack sulfur-containing amino acids and tryptophan. Therefore，in the developmentof the product，the four proteins can be combined to make the type and content of essential amino acids morecomplete.

Key words: wheat protein powder；soy protein powder；whey protein powder；yeast protein powder；amino acidevaluation

中图分类号：TS201      文献标志码：A      文章编号：1007-7871（2022）06-0001-04

2022，Vol.25，No.6