Stochastic simulation of growth curves of Acidithiobacillus ferrooxidans
来源期刊：中南大学学报(英文版)2006年第5期
论文作者：杨宇 彭宏 邱冠周 柳建设 胡岳华
文章页码：473 - 476
Key words：Acidithiobacillus ferrooxidans; stochastic simulation; growth curves; lag phase
Abstract: To reveal the low growth rate ofAcidithiobacillus ferrooxidans, a stochastic growth model was proposed to analyze growth curves of these bacteria in a batch culture. An algorithm was applied to simulate the bacteria population during lag and exponential phase. The results show that the model moderately fits the experimental data.Further, the mean growth constant (K) of growth curves is obtained by fitting the logarithm of the simulating population data versus the generation numbers with the different initial population number (N0) and initial mean activity of population (A0). WhenN0is 300 and 700 respectively, the discrepancy ofKvalue is only 0.91%, however,A0 is 0.34 and 0.38 respectively, the discrepancy ofKvalue is 19.53%. It suggests that the effect ofA0on the lag phase exceedsN0, though both parameters could shorten the lag phase by increasing their values.
