A preliminary study on the improvement of antagonistic efficiency of salt-resistant Rhodospirillaceae

Culture conditions to improve the antagonistic efficiency of the bacteria were investigated using the photosynthetic bacteria medium.It was found that the optimum carbon source was glucose,the optimum nitrogen source(NH4)2HPO4,and MnSO4 H2O and CaCl2 to be eliminated in the medium.The minimum inhibitory concentration on the Rhodospirillaceae under the optimized conditions was 32 AU ml-1,doubled from the original medium.However,there was no effect on the antagonism by the addition of surfactants PEG and D-sorbitol.