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. 2011 Aug 1;6(8):e23045. doi: 10.1371/journal.pone.0023045

Figure 1. Antibacterial activity of S. persica essential oil determined by colony forming units (CFU) assay.

Figure 1

The individual bars show the statistical mean and standard deviation of the number of surviving bacteria from three experiments. The essential oil concentration is in percentage of final assay volume. Control is with DMSO only. (A) Gram-negative bacteria (B) Gram-positive bacteria (C) Kinetics of antibacterial activity against E. coli MC4100 (Ec) and A. actinomycetemcomitans (Aa) Samples were withdrawn for CFU determination at time-points indicated. Oil dilution was 0.1%. The CFU values displayed are the statistical mean of three experiments.