Should Strengthen Cognizing and Teaching to the Deceleration Phase of Single Cell Organisms Growth Curve in Batch Cultivation

Abstract:

The growth curve of single cell organisms in batch cultivation could divide into 6 phases, lag phase, acceleration phase, log phase, deceleration phase, stationary phase, and death phase, based on specific growth rate during cultivation process. There were significantly differences between deceleration phase and the other phases in cell growth, substrate consumption, product formation, and genes express profile. The deceleration phase was highly important to fermentation process. However, cognizing and teaching to the deceleration phase had been considerably weakened since a long period. So it should be strengthened.

Key words:Single cell organisms, Growth curve in batch cultivation, Deceleration phase, Growth kinetics, Product formation, Genes express profile