Activity of essential oils from Brazilian medicinal plants on Escherichia coli

Duarte, Marta Cristina Teixeira; Leme, Ewerton Eduardo; Delarmelina, Camila; Soares, Andressa Almeida; Figueira, Glyn Mara; Sartoratto, Adilson

doi:10.1016/j.jep.2006.11.034

Cited by 188 publications

(117 citation statements)

References 15 publications

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“…The minimum inhibitory concentration for the two extracts was tested on two microorganisms, as presented in Table 4. Duarte et al (2007) and Wang et al (2008) classified the extracts as strong inhibitors for MIC values below 500 lg/mL, moderate inhibitors for MIC between 600 and 1500 lg/mL and weak inhibitors for MIC above 1600 lg/mL. Thus, the two extracts obtained in this work may be considered weak inhibitors for Staphylococcus aureus with the minimum inhibitory concentration found of 2000 lg/mL.…”

Section: Resultsmentioning

confidence: 78%

Phytochemical profile, antioxidant and antimicrobial activity of extracts obtained from erva-mate (Ilex paraguariensis) fruit using compressed propane and supercritical CO2

et al. 2016

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Traditionally, Ilex paraguariensis leaves are consumed in tea form or as typical drinks like mate and terere, while the fruits are discarded processing and has no commercial value. The aim of this work to evaluate phytochemical properties, total phenolic compounds, antioxidant and antimicrobial activity of extracts of Ilex paraguariensis fruits obtained from supercritical CO 2 and compressed propane extraction. The extraction with compressed propane yielded 2.72 wt%, whereas with supercritical CO 2 1.51 wt% was obtained. The compound extracted in larger amount by the two extraction solvents was caffeine, 163.28 and 54.17 mg/g by supercritical CO 2 and pressurized propane, respectively. The antioxidant activity was more pronounced for the supercritical CO 2 extract, with no difference found in terms of minimum inhibitory concentration for Staphylococcus aureus for the two extracts and better results observed for Escherichia coli when using supercritical CO 2 .

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Section: Resultsmentioning

confidence: 78%

Phytochemical profile, antioxidant and antimicrobial activity of extracts obtained from erva-mate (Ilex paraguariensis) fruit using compressed propane and supercritical CO2

et al. 2016

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“…In a comparative analyses, it can be observed that the largest inhibition halo was obtained at the concentration of 50% for all bacteria tested, and the largest halo (8.83 mm) was observed for P. aeruginosa. Duarte et al (2007) tested essential oils of several plants commonly used as medicines in Brazil against E. coli, and found that the essential oil of T. vulgaris inhibited, efficiently, 5 of the 13 serotypes of E. coli. Rota et al (2008) found efficient antimicrobial activity of the essential oil of thyme against the bacteria E. coli, L. monocytogenes, S. enterica Enteritidis, and S. aureus, and timol was the major compound of thyme.…”

Section: Resultsmentioning

confidence: 99%

“…However, the inhibitory effect of the same oil on E. coli did not present significant variation in the size of the halo at the concentrations of 0.1, 0.5, 1.0, 5.0, and 10%, while at concentrations of 20, 30, 40, and 50%, a size variation was observed in relation to the results of the first group although among them, the values remained constant. Several authors, such as Pereira et al (2008) and Duarte et al (2007) consider that the major constituents of the essential oil of C. citratus and C. winterianus, monoterpenes geranial and neral, are responsible for the antibacterial action. However, the myrcene is an acyclic Tukey Test at 95% significance for differences of the inhibition zone averages (measured in millimeters).…”

Section: Discussionmentioning

confidence: 99%

In vitro antimicrobial properties of plant essential oils thymus vulgaris, cymbopogon citratus and laurus nobilis against five important foodborne pathogens

et al. 2012

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In vitro antimicrobial properties of plant essential oils thymus vulgaris, cymbopogon citratus and laurus nobilis against five important foodborne pathogens Propriedades antibacterianas in vitro de óleos essenciais de thymus vulgaris, cymbopogon citratus e laurus nobilis contra cinco importantes bactérias patogênicas veiculadas por alimentosAlessandra Farias MILLEZI 1 *, Danila Soares CAIXETA 1 , Diogo Francisco ROSSONI 2 , Maria das Graças CARDOSO 3 , Roberta Hilsdorf PICCOLI 4 IntroductionThe essentials oils are products of the secondary plants' metabolism and several of them are used as seasonings and medicines. They can be defined as complex mixtures of volatile, lipophilic, odoriferous, and liquid substances (SIMÕES; SPITZER, 2004). The essential oils play an important role in plant protection such as antibacterial, antiviral, antifungal, insecticidal properties and also against herbivore attack. Currently, 3.000 essentials oils are known, 300 of which are commercially important in the pharmaceutical, agronomic, food, sanitation, cosmetics, and perfume industries (BAKKALI et al., 2008).The antimicrobial properties of condiment and medicinal plant essential oils have been stirring interest from the perspective of their making up an alternative to the use of chemical additives in foods. In recent years, it has been related that some essentials oils are capable of inhibiting bacteria of food origin and prolonging the shelf life of processed foods (KIM et al., 1995;SMITH-PALMER;STEWART;FYFE, 1998). Due to their hydrophobic characteristic, these compounds act over the lipids of the cell membrane modifying its structure and turning it more permeable, allowing the passage of ions and or other substances. ResumoDiversos óleos essenciais de plantas condimentares e medicinais possuem atividade antimicrobiana comprovada, sendo de grande interesse para a indústria de alimentos. Dessa forma, as Concentrações Mínimas Inibitórias (CMI) desses óleos para diversas bactérias devem ser determinadas. As CMI variam de acordo com o óleo utilizado, dos compostos majoritários e da fisiologia da bactéria em estudo. Na presente pesquisa, os óleos essenciais das plantas Thymus vulgaris (tomilho), Cymbopogon citratus (capim-limão) e Laurus nobilis (louro) foram quantificados quimicamente e determinou-se a CMI sobre as bactérias Staphylococcus aureus ATCC 25923, Escherichia. coli ATCC 25922, Listeria monocytogenes ATCC 19117, Salmonella entérica Enteritidis S64 e Pseudomonas aeruginosa ATCC 27853. O óleo essencial de C. citratus demonstrou atividade bacteriana em todas as concentrações testadas e sobre todas as bactérias, sendo seus constituintes majoritários o geranial e neral. O constituinte majoritário de T. vulgaris foi 1,8 cineol e do óleo de L. nobilis, que apresentou menor atividade antibacteriana, foi o linalool, seguido pelo 1,8 cineol. As bactérias Gram-negativas demostraram maior resistência perante o uso dos óleos essenciais testados neste estudo, E. coli foi a menos sensível, sendo inibida apenas pelos óleos de C. citratus...

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“…]) with important health benefits and ecosystem services. More specifically, Lemon verbena, is indigenous to South America (Duarte et al, 2007) and brought to Europe by the Spaniards and now is cultivated in many countries in Latin and Central America,in Southern Europe (Greece, France), in Northern Africa (Algeria, Morocco) China, and Iran. It is used as both a cullinary and a medicinal herb.…”

Section: Introductionmentioning

confidence: 99%

Patterns of Herbaceous Plant Species Richness, Composition and Soil Properties in an Organic Cultivation

Solomou¹,

Skoufogianni²,

Kamperllari³

2017

AgricultForest

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Activity of essential oils from Brazilian medicinal plants on Escherichia coli

Cited by 188 publications

References 15 publications

Phytochemical profile, antioxidant and antimicrobial activity of extracts obtained from erva-mate (Ilex paraguariensis) fruit using compressed propane and supercritical CO2

Phytochemical profile, antioxidant and antimicrobial activity of extracts obtained from erva-mate (Ilex paraguariensis) fruit using compressed propane and supercritical CO2

In vitro antimicrobial properties of plant essential oils thymus vulgaris, cymbopogon citratus and laurus nobilis against five important foodborne pathogens

Patterns of Herbaceous Plant Species Richness, Composition and Soil Properties in an Organic Cultivation

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