Antimicrobial Activity of the Essential Oil from Hyptis carpinifolia Benth
American Journal of Plant Sciences (AJPS)
Hyptis carpinifolia Benth
(Rosmaninho) is used in folk medicine in the fight against colds and
rheumatism. The objective of this study was to evaluate the antimicrobial
activity of the essential oil from H.
carpinifolia. The essential oil was extracted by hydrodistillation using a
modified Clevenger apparatus. The biological activity was determined using the
Agar Cavity Diffusion technique to evaluate the effect of concentrations of
500, 250, 125, 62.5, 31.25, 15.62, 7.81 and 3.9 μg·mL-1 on the bacteria Escherichia coli, Listeria monocytogenes, Salmonella Choleraesuis, Staphylococcus aureus and Pseudomonas aeruginosa. The fungicidal
potential was evaluated by the method of dilution in agar, and the percentage
inhibition of mycelial growth of Alternaria
alternata, Botrytis cinerea and Fusarium oxysporum was evaluated. The
dilutions tested were 1000, 750, 500, 250 and 100 μL·L-1.
The minimum inhibitory concentrations (MIC) of the essential oil for L. monocytogenes, S. aureus and E. coli were 31.25;