【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。更多还原

【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.更多还原