Antimicrobial Activity of Lippia Species from the Brazilian Semiarid Region Traditionally Used as Antiseptic and Anti-Infective Agents
Table 2
Minimum inhibitory concentration (MIC) of the crude extract and fractions from L. origanoides and reference antibiotics.
Samples
Minimum inhibitory concentration (mgmL−1)
E. coli CCMB261
S. aureus CCMB262
S. aureus CCMB263
P. aeruginosa CCMB268
C. albicans CCMB286
C. parapsilosis CCMB288
L. origanoides leaves
CEXL
5.263
1.316
0.658
5.263
2.631
2.631
HEFL
1.316
—
0.329
—
2.631
—
DIFL
0.658
—
2.631
—
1.316
—
EAFL
0.658
—
0.329
—
2.631
—
AQFL
2.631
—
2.631
—
2.631
—
L. origanoides stems
CEXS
5.263
5.263
2.631
5.263
2.631
5.263
HEFS
2.631
—
0.658
—
2.631
—
DIFS
0.658
—
2.631
—
0.658
—
EAFS
1.316
—
2.631
—
2.631
—
AQFS
5.263
—
5.263
—
2.631
—
Chloramphenicol
10
0.078
0.313
5
—
—
Nystatin
—
—
—
—
1.25
2.5
(—): not evaluated; CEX: crude extract; HEF: hexane fraction; DIF: dichloromethane fraction; EAF: ethyl acetate fraction; AQF: aqueous fraction; L: leaves; S: stems. MIC = 2.631 mgmL−1 was the maximum value considered for attribution of antimicrobial activity for each strain.