Investigation of Cinnamaldehyde Derivatives as Potential Organic UV Filters

Figure 4

Time-course analysis of bacterial growth. P. aeruginosa growth at 1/16 dilutions over six hours of incubation at 37°C at one-hour intervals expressed as percent maximum where growth at 100% is represented by TB+ (n = 4 for UV compound 1 and n = 3 for UV compounds 2–5). Experimental conditions compared TB combined with P. aeruginosa culture (light blue, TB+), DMSO combined with P. aeruginosa (red, DMSO+), compound dissolved in DMSO combined with P. aeruginosa (gray, UV compound + DMSO+), kanamycin combined with P. aeruginosa (yellow, kanamycin+), and compound combined with DMSO without the presence of P. aeruginosa (dark blue, UV compound + DMSO−). Significant differences are indicated between DMSO+ and UV compound + DMSO+ with an asterisk ().