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食品研究与开发:2016,37(2):93-97
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双酶法制备大豆肽工艺优化研究
柯涛1,黄亚男2,庞振凌1,巩婷婷1,王曦1,李盘欣2,贾春阳1,郭金璐1,迟婷婷1,江雨1,黎文进1
(1. 南阳师范学院 生命科学与技术学院,河南 南阳 473061; 2. 河南省南街村集团有限公司, 河南 临颖 462600)
Study on the Soybean Peptides via Hydrolysis by Two Enzymes and the Optimization of Process
KE Tao1, HUANG Ya-nan2, PANG Zhen-ling1, GONG Ting-ting1, WANG Xi1, LI Pan-xin2, JIA Chun-yang1, GUO Jin-lu1, CHI Ting-ting1, JIANG Yu1, LI Wen-jin1
(1. College of Life Science and Technology, Nanyang Normal University, Nanyang 473061, Henen, China; 2. Henan Province Nanjiecun Group Limited Company, Linying 462600, Henen, China)
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投稿时间:2014-09-28    
中文摘要: 以大豆分离蛋白为原料,通过单因素试验研究蛋白液的浓度、水解的温度、水解时间、酶的加入量及 pH 等因素 对大豆分离蛋白水解度的影响,确定适宜的范围值和因素组合。结果表明,大豆分离蛋白在蛋白液浓度 8 %,加酶底物 比为 2 %,在 55 ℃水解 4 h,水解初始 pH 为 9.0~10.0 时水解率最高。水解后 pH 稳定在 7 左右。通过苦味值测定,结果表 明,风味酶在 50 ℃条件下,水解 1 h,苦味值最低。液相色谱检测水解后肽的分子量主要分布在 300 Da~1 000 Da 范围。小 于 1 000 Da 以下的肽占总量的 80.3 %,2 000 Da 以下的肽含量占 91.5 %。
Abstract:Flavourzyme and alcalase were used for hydrolysis of the soybean protein and the properties of obtained peptides were examined here. The optimum conditions of the hydrolysis of the soybean protein were gotten by single factor experiment. For the alcalase-catalyzed hydrolysis, the optimum temperature, substrate concentration, ratio of Alcalase to substrate, pH value and time were 55 ℃, 8 %, 2 %, 9.0~10.0 and 4 h, respectively, and the reaction time and temperature for the subsequently performed flavourzyme -catalyzed hydrolysis, were 50 ℃, and 1h, respectively. The molecular weights of achieved oligo-peptide were lower than 1 000 D and predominated (80.3 %). This research can be helpful to the application of hydrolysis of soy protein.
文章编号:201602023     中图分类号:    文献标志码:A
基金项目:河南省教育厅科学技术研究重点项目基础研究计划 (13A180809);河南省科技厅攻关项目(112102310093);河南省教育厅自然科学研究计划项目(2011B180039)
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