Antimicrobial Activity of the Essential Oil from <i>Hyptis carpinifolia</i> Benth

Abstract

Essential oils are secondary metabolites whose biological properties have been studied with emphasis on antimicrobial activity. 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

Antibacterial action of the essential oil from Cantinoa carpinifolia benth. Against Escherichia coli and Staphylococcus aureus strains

“…E coli was more resistance than S aureus, a fact that can be justified because it is a Gram-negative bacterium, and has an outer membrane that can hinder the penetration and action of the essential oil constituents. 26 Corroborating the present study, Camargo et al 9…”

“…Corroborating the present study, Camargo et al found a higher sensitivity of H carpinifolia ( C carpinifolia ) Gram‐positive bacteria to an essential oil than the Gram‐negative strains. However, the MIC values obtained were higher using the agar cavity diffusion method.…”

“…As a reflection of its protective function, the essential oils have numerous biological properties that stand out in the food industry, and these properties are being increasingly explored by the different industrial branches . The antibacterial effect of the essential oil is reported in the literature by several authors, and some studies attribute the antibacterial potential of the essential oils to the lipophilic action of their constituents, which allows them to interact with the bacterial membrane to promote its expansion, increase its fluidity and permeability, trigger disorders in the proteins present in the membrane, inhibit respiration, alter the ion‐transport processes, and cause lysis of the cell …”

“…4 The antibacterial effect of the essential oil is reported in the literature by several authors, and some studies attribute the antibacterial potential of the essential oils to the lipophilic action of their constituents, which allows them to interact with the bacterial membrane to promote its expansion, increase its fluidity and permeability, trigger disorders in the proteins present in the membrane, inhibit respiration, alter the ion-transport processes, and cause lysis of the cell. [5][6][7][8][9] Among the species producing essential oils, Cantinoa carpinifolia Benth deserves attention. Popularly known as rosman, it is a branched shrub that belongs to the family Lamiaceae.…”

Eucalyptus grandis and Eucalyptus microcorys Essential Oils: in vitro Modulation of Hemostasis and Genotoxic Activity

“…The species were identified by the botanist Manuel Losada Gavilanes, and the exsiccates were deposited at UFLA's Herbarium. The extraction of the essential oils was performed at the Organic Chemistry Laboratory-Essential Oils, Department of Chemistry -UFLA (coordinated by Dr Maria das Graças Cardoso), with a modified Clevenger apparatus using the hydrodistillation technique (±98˚C for 2 hours), according to Camargo and collaborators [4]. The essential oils were stored at 4°C and diluted in DMSO: PBS (1:1).…”