Chemical Composition, Antibacterial, and Anti-Inflammatory Activities of Essential Oils from Flower, Leaf, and Stem of Rhynchanthus beesianus

Table 2

The inhibition zone diameters of R. beesianus F-EO, L-EO, and S-EO^a.

Microorganisms	The inhibition zone diameters (mm)
	F-EO	L-EO	S-EO	Streptomycin
Gram positive
Bacillus subtilis ATCC 6633
Enterococcus faecalis ATCC 19433
Staphylococcus aureus ATCC 6538P
Gram negative
Proteus vulgaris ACCC 11002
Pseudomonas aeruginosa ATCC 9027
Escherichia coli CICC 10389

^aDiameter of the inhibition zone includes diameter of the disk (6 mm). Essential oil solutions were dissolved with ethyl acetate (tested volume: 20 μL, 100 mg/mL); streptomycin distilled water solution (tested volume: 20 μL, 100 μg/mL) was used as a positive control.