Antimicrobial Activity of Lippia Species from the Brazilian Semiarid Region Traditionally Used as Antiseptic and Anti-Infective Agents

Table 1

Antimicrobial activity by disk diffusion method of crude extracts from L. origanoides, L. alnifolia, L. thymoides, and reference antibiotics.

Samples	Inhibition zones ± (mm)^1
	E. coli; CCMB261	S. aureus; CCMB262	S. aureus; CCMB263	P. aeruginosa; CCMB268	C. albicans; CCMB286	C. parapsilosis; CCMB288
L. alnifolia leaves	R	10.2±1.3	10±0.5	R	R	R
L. alnifolia stems	R	12.3±1.0	13.9±0.8	R	R	R
L. alnifolia flowers	R	8.4±0.9	R	R	R	6.9±0.1
L. origanoides leaves	R	13.0±0.5	12.0±0.9	R	11.7±0.4	7.1±0.4
L. origanoides stems	R	R	R	R	R	R
L. thymoides leaves	R	11.2±1.0	9.7±1.3	R	R	R
L. thymoides stems	R	8.7±0.6	R	R	R	R
L. thymoides flowers	R	8.5±1.5	R	R	R	R
Cloramphenicol^2	15.8±1.7	22.6±2.2	R	8.5±0.9	—	—
Nystatin^3	—	—	—	—	17.5±0.9	16.6±0.9

1Inhibition zones including the diameter disk (6 mm); ²cloramphenicol at 30 μg/disk; ³nystatin at 10 μg/disk; R: resistant; (—): Not evaluated.