摘要
利用碱性蛋白酶和木瓜蛋白酶双酶分步水解玉米蛋白粉制备玉米肽干粉。对其组成成分、功能特性的研究表明:玉米肽得率为65%,干粉中肽质量分数为76.5%,富含丙氨酸、亮氨酸和异亮氨酸,肽分子量分布于5734 u附近,具有高度可溶性且不受pH值的影响,即使浓度高时黏度也很低,具有广阔的应用前景。
Corn protein powder was hydrolyzed by alkaline protease and papain to prepare corn peptide powder.The components and functional characteristics of this corn peptide powder were studied.The results showed that the yield of corn peptide was 65% and the peptide content in this powder was 76.5%.Meanwhile,corn peptide powder was abundant in alanine,leucine and isoleucine,and the molecular weight of peptides distributed nearby 5734 u.This kind of powder was featured by high solubility,which would not be affected by pH values,namely it had low viscosity even under high concentration condition.Because of this feature,corn peptide powder would have an extensive application prospect.
出处
《粮食与饲料工业》
CAS
北大核心
2009年第10期17-18,21,共3页
Cereal & Feed Industry
关键词
玉米蛋白粉
双酶水解
玉米肽干粉
溶解度
氨基酸含量
黏度
分子量分布
corn protein powder
hydrolysis by two proteases
corn peptide powder
solubility
amino acids content
viscosity
molecular weight distribution
