Chemical and Antimicrobial Analyses of Juniperus chinensis and Juniperus seravschanica Essential Oils and Comparison with Their Methanolic Crude Extracts

Table 2

Antibacterial activity of the J. seravschanica and J. chinensis essential oils and methanolic crude extracts (100 μg) of J. seravschanica and J. chinensis measured using the disc diffusion method against six bacterial strains. Each cell with different alphabet subscribes across each row was significantly different () based on Tukey HSD post hoc analysis.

Bacteria strain	Essential oil of		Methanolic crude extracts of		Positive control (tetracycline 30 μg)
	J. seravschanica	J. seravschanica	J. seravschanica	J. chinensis
Escherichia coli NCTC 10418	8.1 ± 0.1^a	9.8 ± 0.2^b	10.9 ± 0.1^c	12.5 ± 0.5^d	15 ± 0.3
Pseudomonas aeruginosa NCTC 10662	13.2 ± 0^a	10.7 ± 0.3^b	10.5 ± 0.5^b	10.7 ± 0.6^b	15 ± 0.6
Bacillus subtilis ATCC 6059	12.4 ± 0.2 ^ab	12.6 ± 0.1^b	15.8 ± 0.3^d	13.8 ± 0.3^c	16 ± 0.4
Micrococcus luteus ATCC 10240	15.4 ± 0.2^c	16.5 ± 0.2^d	13.5 ± 0.5^b	9.8 ± 0.3^a	18 ± 0.2
Staphylococcus aureus NCTC 6571	13.2 ± 0.2^a	12.2 ± 0.1^a	17.3 ± 0.6^c	15.3 ± 0.6^b	17 ± 0.6
Methicillin-resistant S. aureus ATCC 33591	9.9 ± 0.1^a	9.9 ± 0.2^a	17.8 ± 0.3^c	13.3 ± 0.6^b	17 ± 0.6