Determination of antibacterial property of lipopeptide fractions. The assay performed against Gram positive S. epidermidis (A) and Gram negative P. aeruginosa (B) bacteria. Data are the means calculated from three replicate experiments and vertical bars correspond to standard deviations. Asterisk represents significant differences between treatments and negative control (0) with p<0.005 using one-way ANOVA followed by Dunnett’s test. The results are presented as the mean of triplicates (n=3) ± SD.