Phytochemical composition of Corsican Teucrium essential oils and antibacterial activity against foodborne or toxi-infectious pathogens

Djabou, Nassim; Lorenzi, Vanina; Guinoiseau, Elodie; Andreani, S.; Giuliani, Marie-Cécile; Desjobert, Jean‐Marie; Bolla, Jean‐Michel; Costa, Jean; Berti, Liliane; Luciani, Anne; Muselli, Alain

doi:10.1016/j.foodcont.2012.06.025

Cited by 66 publications

(49 citation statements)

References 38 publications

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“…The Lamiaceae are an important family of medicinal plants [27], where most species are aromatic and have essential oils [28,29]. Specifically, the three species selected for this study are rich in essential oils composed mainly of monoterpenes [20,[30][31][32][33]. Daphne gnidium species was selected for its low, although major, concentration of flavonoids [34].…”

Section: Selection Of the Studied Plantsmentioning

confidence: 99%

Quantification of the Antioxidant Activity of Plant Extracts: Analysis of Sensitivity and Hierarchization Based on the Method Used

2020

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Plants have a large number of bioactive compounds with high antioxidant activity. Studies for the determination of the antioxidant activity of different plant species could contribute to revealing the value of these species as a source of new antioxidant compounds. There is a large variety of in vitro methods to quantify antioxidant activity, and it is important to select the proper method to determine which species have the highest antioxidant activity. The aim of this work was to verify whether different methods show the same sensitivity and/or capacity to discriminate the antioxidant activity of the extract of different plant species. To that end, we selected 12 species with different content of phenolic compounds. Their extracts were analyzed using the following methods: 2,2-di-phenyl-1-picrylhydrazyl (DPPH) radical scavenging capacity assay, ferric reducing (FRAP) assay, Trolox equivalent antioxidant capacity (ABTS) assay, and reducing power (RP) assay. The four methods selected could quantify the antioxidant capacity of the 12 study species, although there were differences between them. The antioxidant activity values quantified through DPPH and RP were higher than the ones obtained by ABTS and FRAP, and these values varied among species. Thus, the hierarchization or categorization of these species was different depending on the method used. Another difference established between these methods was the sensitivity obtained with each of them. A cluster revealed that RP established the largest number of groups at the shortest distance from the root. Therefore, as it showed the best discrimination of differences and/or similarities between species, RP is considered in this study as the one with the highest sensitivity among the four studied methods. On the other hand, ABTS showed the lowest sensitivity. These results show the importance of selecting the proper antioxidant activity quantification method for establishing a ranking of species based on this parameter.

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Section: Selection Of the Studied Plantsmentioning

confidence: 99%

Quantification of the Antioxidant Activity of Plant Extracts: Analysis of Sensitivity and Hierarchization Based on the Method Used

2020

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“…In order to overcome the problem of resistance of microorganisms to antibiotics, most of the work is currently oriented towards other antimicrobial agents with a very specific mode of action. Thus, researchers and scientists are trying to find effective and accessible alternatives from natural products extracted from medicinal and aromatic plants, which are known to be endowed with antimicrobial properties [3][4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Chemical composition and antibacterial activity of essential oil of Tetraclinis articulata (Vahl) Masters branches of eastern Morocco

Sadiki

Idrissi

Sbiti

et al. 2018

Chem. Biol. Technol. Agric.

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Background: Some pathogenic microbial species are becoming less sensitive to antibiotics and developing resistance multiples. The use of essential oils is a serious substitute for treatment with antibiotics in infectious diseases. The present study aims to investigate the chemical composition and to evaluate the antibacterial activity of the essential oil of branches of Tetraclinis articulata (Vahl) Masters (Cupressaceae). Methods: The extraction of the essential oil was realized by hydrodistillation, and the analysis was carried out by gas chromatography coupled with mass spectroscopy (GC-MS/FID). The antibacterial test was carried out using two different methods: the disc diffusion method and the macrodilution method which aims to determine the minimum inhibitory concentration (MIC). Results: The yield of essential oil was 0.84%. Chromatographic analysis revealed that the major constituents were α-pinene (38.75%), limonene (13.24%), bornyl acetate (8.78%) and camphor (7.68%). The results of the antibacterial activity show that the essential oil exerts a powerful effect to inhibit some strains tested. Conclusions: The antibacterial activity demonstrated in this study could justify the traditional uses of this plant and could contribute to value its potential in order to develop new bioactive compounds.

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“…According to the width of the inhibition zone diameter expressed in mm, results were appreciated following the criteria of Fertout-Mouri et al [16]. Thus, the IZDs were sorted out as follows: for diameters equal to or below 8.0 mm, the bacteria were classified as insensitive (-) to the action of EOs; for diameters between 8.0 to 14.0 mm, as moderately sensitive (+); for diameters between 14.0 to 20.0 mm, as sensitive (++); and for diameters longer than 20.0 mm, as extremely sensitive bacteria.…”

Section: Analysis Of the Resultsmentioning

confidence: 99%

Evaluation of the Potential of Some Essential Oils in Biological Control against Phytopathogenic Agent Pseudomonas syringae pv. Tomato DC3000 Responsible for the Tomatoes Speck

Sabir¹,

Elkhalfi²,

Errachidi³

et al. 2017

J Plant Pathol Microbiol

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To investigate biological control mains against phytopathogenic agent Pseudomonas syringae pv. tomato DC3000, responsible for bacterial speck, tests on the antibacterial activity of six essential oils were carried out. The essential oils, obtained by hydro distillation, was analyzed by gas chromatography (GC). The determination of the antibacterial activity of the essential oils carried out in-vitro using the well diffusion, micro atmosphere methods and the determination of MIC and CMB. Only essential oils of Cedrus atlantica had a negative activity against the bacterial strain. However, the overall results of this study suggested that Mintha pulegium, Thym vulgaris, Eucalyptus globulus essential oils had potential as a bio-pesticide for the control of bacterial speck disease of tomato. genetics and biotechnology (PGMB) [5]. This strain is characterized by the production of an endotoxin (pyoverdine) [10] and by its multiple resistance to antibiotics (rifampicin) [4]. The P. syringae pv. tomato cultures were grown on King's B and LB with rifampicin (50 g/ml) agar plates for strain verification.

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Phytochemical composition of Corsican Teucrium essential oils and antibacterial activity against foodborne or toxi-infectious pathogens

Cited by 66 publications

References 38 publications

Quantification of the Antioxidant Activity of Plant Extracts: Analysis of Sensitivity and Hierarchization Based on the Method Used

Quantification of the Antioxidant Activity of Plant Extracts: Analysis of Sensitivity and Hierarchization Based on the Method Used

Chemical composition and antibacterial activity of essential oil of Tetraclinis articulata (Vahl) Masters branches of eastern Morocco

Evaluation of the Potential of Some Essential Oils in Biological Control against Phytopathogenic Agent Pseudomonas syringae pv. Tomato DC3000 Responsible for the Tomatoes Speck

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