Effects of Partial 02 Pressure, Partial CO2 Pressure, and Agitation on Growth Kinetics of Azospirillum lipoferum under Fermentor Conditions

International audienceAzospirillum lipoferum crtl was grown in batch cultures under standard conditions at 85% saturation of dissolved oxygen (DO) and 30-g/liter glucose concentrations. Kinetic studies revealed nutritional limitations of growth and the presence of an initial lag phase prior to consumption of glucose. The influences of various gaseous environments and shear stress on growth, i.e., various conditions of agitation-aeration, were characterized. Faster growth in the first stages of the culture and shorter duration of the lag phase were observed at DO concentrations of