食品科学 ›› 2009, Vol. 30 ›› Issue (19 ): 218-222.doi: 10.7506/spkx1002-6630-200919050

• 生物工程 • 上一篇    下一篇

均匀设计优化节杆菌产β-呋喃果糖苷酶发酵培养基

代志凯1,2,唐嘉婕2,阮 征1,2,*,印遇龙1,2,3   

  1. 1.食品科学与技术国家重点实验室 2.南昌大学生命科学与食品工程学院 3.中国科学院亚热带农业生态研究所
  • 收稿日期:2009-07-21 出版日期:2009-10-01 发布日期:2010-12-29
  • 通讯作者: 阮 征
  • 基金资助:

    南昌大学“赣江学者奖励计划”项目;中国博士后科学基金一等资助项目(20080440166);
    食品科学与技术国家重点实验室探索项目(SKLF-TS-200817);江西省教育厅科技项目(GJJ09068)

Optimization of Fermentation Medium for β-Fructofuranosidase Production from Arthrobacter sp.10138 Using Uniform Design

DAI Zhi-kai1,2,TANG Jia-Jie2,RUAN Zheng1,2,*,YIN Yu-long1,2,3   

  1. 1.State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China;2. College of Life
    Science and Food Engineering, Nanchang University, Nanchang 330031, China ; 3. Institute of Subtropical Agriculture, Chinese
    Academy of Sciences, Changsha 410125, China
  • Received:2009-07-21 Online:2009-10-01 Published:2010-12-29
  • Contact: RUAN Zheng

摘要:

采用均匀设计法,优化节杆菌发酵产β-呋喃果糖苷酶培养基。采用6因素10水平混合均匀设计表,综合考察蔗糖、牛肉膏、酵母膏、(NH4)2HPO4、KH2PO4、MgSO4·7H2O 6种培养基成分对节杆菌发酵产β-呋喃果糖苷酶转移糖基酶活力的影响。通过二次多项式逐步回归得出最终培养基组成为:蔗糖5g/L、牛肉膏30g/L、酵母膏2g/L、(NH4)2HPO4 10g/L、KH2PO4 0.5g/L、MgSO4·7H2O 0.2g/L,在此条件下回归方程的酶活力理论值为382.93U/ml,验证实验中酶活力为365.85U/ml,验证值与预测值之间吻合较好。

关键词: β-呋喃果糖苷酶, 低聚乳果糖, 均匀设计, 培养基优化

Abstract:

A uniform design involving 30 experiments of 6 variables at 10 levels was applied to optimize the fermentation medium composition of Arthrobacter sp.10138 for high activity of β-fructofuranosidase. The experimental data were analyzed by stepwise regression to obtain a quadratic polynomial regression model for predicting β-fructofuranosidase activity as a function of 6 variables. The optimal medium composition was as following: sucrose 5 g/L, beef extract 30 g/L, yeast extract 2 g/L, (NH4)2HPO4 10 g/L, KH2PO4 0.5 g/L and MgSO4·7H2O 0.2 g/L. Under these conditions, the predicted maximum β -fructofuranosidase activity was 382.92 U/ml, which was in close agreement with the actual experimental value of 365.85 U/ml.

Key words: β-fructofuranosidase, lactosucrose, uniform design method, medium optimization

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