【摘要】 95.5%蛋白质含量的大豆短肽是一种白色、不吸潮、易溶于水和酸性环境、无异味的粉末状混和物。在280nm处表现出蛋白质的特征紫外吸收峰。200～1000u短肽(二肽,三肽和四肽)占总肽含量的73.65%;游离氨基酸含量为3.17%。大豆短肽使DPPH自由基减少50%时的半最大清除浓度SC50是30.3043mg/mL,约为抗坏血酸抗氧化能力的1/2000。可广泛用于医疗食品、中老年食品、婴幼儿食品及运动员食品等。更多还原

【Abstract】 Soybean short peptide of 95.5% protein content was a white powder with excellent solubility in water or acid without hygroscopy and strange smell.The typical UV absorption peak of protein was found at 280 nm.Dipeptides,tripeptides and quapeptides of 200～1 000 u occupied 73.65% in total peptides.Free amino acid was 3.17%.SC50,the half-maximal scavenging concentration decreasing DPPH 50%,was 30.304 3 mg/mL.Antioxidant capacity of soybean short peptide with high protein content was 1/2 000 times than that of ascorbic acid.This peptide could be used in foods for people with special needs such as patients,seniors,infants and athletes.更多还原