食品科学 ›› 2012, Vol. 33 ›› Issue (23): 215-218.

• 生物工程 • 上一篇    下一篇

响应面法对水牛乳酪蛋白源抗菌肽制备条件

成希飞,李子超,向明霞,徐明芳*   

  1. 暨南大学生物工程系
  • 收稿日期:2011-10-18 修回日期:2012-10-26 出版日期:2012-12-15 发布日期:2012-12-12
  • 通讯作者: 徐明芳 E-mail:xumingfang@jnu.edu.cn
  • 基金资助:

    乳品质量安全检测技术研究

Response Surface Optimization of Conditions for Antibacterial Peptide Preparation from Buffalo Milk Casein

  • Received:2011-10-18 Revised:2012-10-26 Online:2012-12-15 Published:2012-12-12
  • Contact: XU Ming-Fang E-mail:xumingfang@jnu.edu.cn

摘要: 采用胰蛋白酶酶解南方水牛乳酪蛋白,以获得具有抗菌性的酶解产物。单因素试验表明,胰蛋白酶酶解酪蛋白的最佳酶解温度、酶解时间、酶与底物比分别为41℃、3h、2.0%,Box-Behnken响应曲面的中心组合试验优化结果表明:最佳酶解条件为:酶解温度43℃、酶解时间3.4h、最佳酶与底物比2.5%,此条件下酪蛋白的水解度为4.76%,酶解产生抗菌肽复合物对大肠杆菌(Escherichia coli)抑菌率可以达到81.34%。

关键词: 酪蛋白, 抗菌肽, 优化, 响应面

Abstract: This paper reports the use of response surface methodology based on Box-Behnken experimental design to optimize the enzymatic hydrolysis of buffalo milk casein by trypsin for preparing antibacterial peptides. The optimum hydrolysis conditions were determined to be hydrolysis at 43 ℃ for 3.4 h with an enzyme/substrate ratio of 2.5%. Under these conditions, the degree of hydrolysis (DH) of buffalo milk casein was 4.76%, and the obtained hydrolysate showed an inhibitory rate as high as 81.34% against Escherichia coli.

Key words: casein, antibacterial peptide, optimization, response surface methodology

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