Correlation between nitrogen fixation rate and alginate productivity of an indigenous Azotobacter vinelandii from Iran


BACKGROUND AND OBJECTIVES Azotobacter vinelandii, a gamma-proteobacterium, is an obligate aerobic free-living gram-negative soil bacterium capable of fixing nitrogen. Oxygen transfer rate into the cell is reduced by the increase of alginate concentrations during the course of A. vinelandii cultivation. This phenomenon provides a low intracellular oxygen… (More)


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