食品科学 ›› 2002, Vol. 23 ›› Issue (1): 47-51.

• 基础研究 • 上一篇    下一篇

Xanthomonas campestris——9002源黄原胶发酵动力学的研究

 李柏林, 康永欣, 骆艳燕, 徐明全   

  1. 上海水产大学食品科学与技术系,上海四药有限公司,深圳市农业科学研究中心
  • 出版日期:2002-01-15 发布日期:2012-02-13

Kinetics of Xanthan Gum Fermentation by Xanthomonas campestris—9002

 LI  Bai-Lin, KANG  Yong-Xin, LUO  Yan-Yan, XU  Ming-Quan   

  • Online:2002-01-15 Published:2012-02-13

摘要: 利用恒化培养技术研究了黄原胶发酵动力学,建立了较为合理的恒化培养系统。对采集的数据用计算机进行回归,求得最大比生产速率μmax=0.242h-1,饱和常数Ks=41.32,基质得率系数YGmax=1.560g/g以及维持系数m=0.009g/g•h,最佳理论稀释速率Dm=0.05428h-1。并研究了黄原胶比生成速率、细胞产素、残糖、粘度等参数随菌体比生成速率的变化关系。

关键词: 黄原胶, 发酵动力学, 恒化培养, 比生长速率

Abstract: The relationships between various parameters and the dilution rate were investigated in chemostat culture system.The results showed that the maximum specific growth rate was μmax=0.0215h-1,substrate constant Ks=4.476,yield of the substrate YGmax=0.062g/g and maintenance coefficient m=0.1543g/g•h and the best theory dilution rate,Dm=0.1376h-1.The results of specific growth rate of Xanthan gum,biomass productivity,remanent sugar and viscosity were also studied.

Key words: Xanthan gum , Kinetics , Chemostat culture , Specific growth rate