食品科学 ›› 2010, Vol. 31 ›› Issue (18): 31-36.doi: 10.7506/spkx1002-6630-201018008

• 工艺技术 • 上一篇    下一篇

酶解花生蛋白制备功能性多肽条件优化研究

范远景1,孟凡莉1,易苗苗1,高海成1,陈 伟2,张华传2,陈苏霞2   

  1. 1.合肥工业大学生物与食品工程学院 2.安徽凯利粮油食品有限公司
  • 收稿日期:2009-11-26 修回日期:2010-04-08 出版日期:2010-09-25 发布日期:2010-12-29
  • 通讯作者: 孟凡莉 E-mail:meng2150@163.com
  • 基金资助:

    安徽省2008 科技攻关计划重大科技专项(08010302091);合肥市科技项目(2008-1025)

Optimization of Enzymatic Hydrolysis Conditions for Preparing Functional Polypeptide from Peanut Protein

FAN Yuan-jing1,MENG Fan-li1,YI Miao-miao1,GAO Hai-cheng1,CHEN Wei2,ZHANG Hua-chuan2,CHEN Su-xia2   

  1. 1. School of Biotechnology and Food Engineeing, Hefei University of Technology, Hefei 230009, China;
    2. Anhui Kaili Cereals, Oils and Foodstuffs Co. Ltd., Hefei 231600, China
  • Received:2009-11-26 Revised:2010-04-08 Online:2010-09-25 Published:2010-12-29
  • Contact: MENG Fan-li E-mail:meng2150@163.com

摘要:

为优化Alcalase 蛋白酶酶解花生蛋白制备功能性多肽的工艺条件,采用响应面分析法,以水解度、短肽得率为响应值,研究温度、pH 值、底物质量分数、酶底比对制备功能性多肽工艺的影响。综合考虑成本和工艺要求等问题,最终确定酶解花生蛋白制备功能性多肽的工艺条件为温度55℃、pH8.4、底物质量分数4.31%、酶底比3.39%、时间4h。该条件下水解度(DH)及三氯乙酸可溶性氮溶解指数(TCA-NSI)分别为23.40% 和74.88%,与理论值的相对误差在0.5% 以内,优化工艺稳定,DH 及TSA-NSI 较高,实验结果与模型预测值相符。

关键词: 花生蛋白, 功能性多肽, 酶解, 响应面分析法

Abstract:

In the present study, alkaline protease hydrolysis was used for the preparation of functional polypeptides from peanut protein. In order to optimize the enzymatic hydrolysis of peanut protein, the effects of temperature, pH, substrate concentration, enzyme amount on degree of hydrolysis (DH) and trichloroacetic acid nitrogen solubility index (TCA-NSI) were explored using response surface methodology. The optimal conditions for achieving both high DH and TCA-NSI were found to be hydrolysis temperature of 55 ℃, pH 8.4, substrate concentration of 4.31%, protease amount of 3.39% and hydrolysis time of 4 h. Under these optimal conditions, a DH of 23.40 and a TCA-NSI of 74.88% were obtained. The experimental values were consistent with the predicted ones with a relative error within 0.5%, indicating that these optimized hydrolysis conditions are reliable.

Key words: peanut protein, functional polypeptide, enzymatic hydrolysis, response surface methodology

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