Chemical Composition and Biological Activities of the Essential Oils of Chrysophyllum albidum G. Don (African Star Apple)

Table 5

Inhibition of P. aeruginosa biofilm formation by of leaf and fruit essential oils of Chrysophyllum albidum.

^#Concentrations	% biofilm inhibition
	Leaf essential oil	Fruit essential oil	Gentamicin
MIC	72.96 ± 0.7	72.4 ± 1.2	88.42 ± 0.86
MIC/2	69.04 ± 0.9	55.39 ± 2.4	65.00 ± 1.21
MIC/4	68.76 ± 0.3	55.82 ± 2.3	57.07 ± 1.67
MIC/8	67.07 ± 0.9	55.18 ± 0.2	56.43 ± 1.34
MIC/16	65.13 ± 2.7	51.57 ± 0.4	48.91 ± 0.89
MIC/32	64.47 ± 0.4	50.60 ± 0.9	45.50 ± 1.10
BIC50 (mg/mL)	6.97 ± 0.56^a	4.78 ± 0.21^b	0.00162 ± 0.28^c

Data presented as mean ± standard deviation, n = 3; ^#concentrations of essential oils or gentamicin used were based on their minimum inhibitory concentration (MIC) against P. aeruginosa; gentamicin was used for comparison purposes. BIC₅₀ values computed from dose-response curve. Different superscript letters (^{a, b, c}) indicate significant difference in BIC₅₀ values ().