Antimicrobial activities and chemical compositions of liposoluble compounds in Synechococcus aeruginosu.

Crude grease extracted from Synechococcus aeruginosu was separated into petroleum ether fraction,benzene fraction and ethanol fraction by gel column using three solvents.The crude grease and the three fractions were tested for antimicrobial activities against three plant pathogen.The results showed that the crude grease inhibited three species of microorganisms.The content of benzene fraction was the highest in the total grease(56.36%) and this fraction has the strongest antimicrobial activities in the three fractions;The content of petroleum ether fraction was the lowest in the total grease(15.13%),but this fraction has no antimicrobial activities.The results of analysis on chemical compositions of three fractions indicated that the petroleumetherfraction was dominated by hydrocarbon;The benzene fractioncon was dominated by threeesters;The ethanol fraction has rich fatty acid.The antimicrobial activities of liposoluble compounds in Synechococcus aeruginosu were the results of the work in coordination with its various chemical compositions.