食品科学 ›› 2009, Vol. 30 ›› Issue (20 ): 94-100.doi: 10.7506/spkx1002-6300-200920016

• 工艺技术 • 上一篇    下一篇

利用TGase 结合微滤技术从乳清粉中分离纯化C G M P 的研究

李博智,阎亚丽,陈庆森*   

  1. 天津市食品生物技术重点实验室,天津商业大学生物技术与食品科学学院
  • 收稿日期:2009-06-06 出版日期:2009-10-15 发布日期:2010-12-29
  • 通讯作者: 陈庆森 E-mail:chqsen@tjcu.edu.cn
  • 基金资助:

    国家自然科学基金项目(30771524);天津市重点支撑项目(09ZCKFNC00700)

Transglutaminase (TGase)-catalyzed Cross-linking Combined with Microfiltration for Separation of Casein Glycomacropeptide (CGMP) from Whey Powder

LI Bo-zhi,YAN Ya-li,CHEN Qing-sen*   

  1. Tianjin Key Laboratory of Food Biotechnology, College of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin
    300134, China
  • Received:2009-06-06 Online:2009-10-15 Published:2010-12-29
  • Contact: CHEN Qing-sen E-mail:chqsen@tjcu.edu.cn

摘要:

利用谷氨酰胺转氨酶(TGase)结合微滤技术从乳清中分离纯化酪蛋白糖巨肽(CGMP)。结合微滤技术考察底物浓度、TGase浓度、pH值、温度和反应时间对分离纯化的影响。通过实验得出最佳酶反应条件为底物浓度8%、TGase酶浓度7U/g、pH6.5、温度39℃、反应时间80min、微滤浓缩循环6次,最后经微滤可得到纯度为70%左右的CGMP。

关键词: 酪蛋白糖巨肽, 谷氨酰胺转氨酶, 微滤, 乳清粉

Abstract:

The present study aimed to develop a new technology of combined TGase-catalyzed cross-linking and microfiltration for the separation of CGMP from whey powder. The main technological parameters of TGase-catalyzed cross-linking were studied. Subsequently, the productivity, purity and amino acid composition of CGMP product were analyzed.  Results showed that a CGMP product with about 70% purity was obtained through 80 min TGase-catalyzed cross-linking with a substrate concentration of 8% and a TGase dose of 7 U/g at pH 6.5, 39 ℃ followed by microfiltration for 6 cycles.

Key words: casein glycomacropeptide (CGMP), transglutaminase (TGase), microfiltration, whey powder

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