摘要
对具有促进保加利亚乳杆菌生长的山楂多糖增殖培养基进行了优化,同时对保加利亚乳杆菌在发酵过程中的生长动力学进行了研究。保加利亚乳杆菌生长的最佳条件为山楂多糖2%,pH为6.5,温度为42℃。在优化后的山楂多糖培养基中的最大菌体浓度是正常MRS培养基的菌体浓度的1.13倍。应用MATLAB软件对Logistic方程进行最优参数估计和非线性拟合,得到了菌体生长动力学模型和模型参数,其相对误差较小,全局收敛性最小。
By optimizing hawthorn polysaccharides＇ multiplication medium and studying growth kinetics in its fermentation process, it is found that the Lactobacillus bulgaricus grow best in the condition of 2% hawthorn polysaccharides, pH 6.5 and 42 ℃. In optimized hawthorn polysaccharides medium, maximum cell concentration is 1.13 times larger than that in normal MRS medium. The growth kinetics model are proved to be the narrow-relative error and narrow-globe convergence by the application of MATLAB software on the optimal parameter estimation and nonlinear fitting of Logistic equation.
出处
《大连工业大学学报》
CAS
北大核心
2013年第4期246-248,共3页
Journal of Dalian Polytechnic University
关键词
保加利亚乳杆菌
山楂多糖
增殖
生长动力学
Lactobacillus bulgaricus
hawthorn polysaccharide
proliferative
growth kinetics
