Antimicrobial activity thesis

Antimicrobial activity of indian medicinal plants pdf

Synergism between essential oils and antimicrobial drugs against Staphylooccus aureus and Escherichia coli strains from human infections. Carvacrol and thymol The structure of thymol is similar to that of carvacrol; however, they differ as to the location of the hydroxyl group in the phenolic ring. Uma abordagem multidisciplinar. Its carbonyl group has affinity for proteins, preventing the action of decarboxylase amino acids on E. The interaction of Surinam cherry Eugenia uniflora , "alecrim-do-campo" Baccharis dracunculifolia , "assa-peixe" V. Mol Med Chem. Numerous studies on the pharmacology of medicinal plants have been accomplished, since they constitute a potential source for the production of new medicines and may enhance the effects of conventional antimicrobials, which will probably decrease costs and improve the treatment quality. Preparation of Plant Extract Extraction The extraction of the Cassia fistula leaves was carried out using known standard procedures. The chemical structures of some antimicrobial compounds, according to Cowan 2 , obtained from plants are shown in Figure 1. Mechanisms of membrane toxicity of hydrocarbons. Rev Univ Rural. On the other hand, synergism was not observed when this type of study was carried out using E. Evaluation of the antibacterial activity of Myrtus communis L. J Food Sci. The phytochemical analyses of the plants were carried out.

The greatest activities were found in the ethyl acetate fraction from P. Both substances seem to make the membrane permeable Characterization of the action of selected essential oil components on gram-negative bacteria.

Based on the aforementioned data, it is possible to conclude that the literature on testing antimicrobial activity of plant products is broad, including an increasing number of publications per year.

The phenolic compounds present in its ethanol extract are responsible for this activity Antibacterial activity of plant essential oils against Staphylococcus aureus and Escherichia coli strains isolated from human specimens.

Thus, in the present work, medicinal plants with emphasis on their antimicrobial properties are reviewed.

review of literature on antimicrobial activity of medicinal plants

In another study, essential oils from rosemary R. In some cases, terpenes from essences that are soluble in water have higher antibacterial power than others Silva NCC.

The antimicrobial activity of four commercial essential oils in combination with conventional antimicrobials. It was found that latex inhibited all tested bacteria except E.

Thesis on phytochemical analysis and antimicrobial activity

In vitro antimicrobial activity of extracts and compounds of some selected medicinal plants from Cameroon. Essential oils from Conyza bonariensis horseweed , Lippia sidoides rosemary-pepper , Plectranthus amboinicus mint and Eucalypthus citriodora eucalyptus were studied by Oliveira et al. Therefore, it is difficult to integrate all those numerous studies on the antimicrobial action of plant products into the present review; a multidisciplinary approach to this theme is increasingly required. Uma abordagem multidisciplinar. The pharmacological industries have produced a number of new antibiotics; resistance to these drugs by microorganisms has increased. Their structure disintegrates the external membrane of gram-negative bacteria, releasing lipopolysaccharides LPS and increasing the permeability of the cytoplasmic membrane to ATP. Alzoreky NS, Nakahara K. In the present study, the microbial activity of hydroalcohol extracts of leaves of Cassia fistula Linn. Possible interactions among medications are frequently observed, which has motivated researchers to test such possibilities. On the other hand, synergism was not observed when this type of study was carried out using E.

It is essential to investigate newer drugs with lesser resistance. Infectious diseases represent an important cause of morbidity and mortality among the general population, particularly in developing countries. Cyclic hydrocarbons act on ATPases, enzymes known to be located at the cytoplasmic membrane and surrounded by lipid molecules.

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