scholarly journals Effect of Harvest Period on Yield, Chemical Composition and Antibacterial Activity of the Essential Oils of Thymus Satureioides

2017 ◽  
Vol 9 (1) ◽  
Author(s):  
Mekkaoui Salma ◽  
Farah Abdellah ◽  
Elkhanchoufi Abdesalam ◽  
Elkhetabi Assia ◽  
Moutaouafiq Salma ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Antibacterial Activity ◽  
Chemical Composition ◽  
Essential Oils ◽  
Mycobacterium Smegmatis ◽  
Aerial Part ◽  
Pathogenic Bacteria ◽  
Flowering Season ◽  
Food Borne ◽  
Thymus Satureioides

This study was performed to examine the yield, the chemical composition and the antibacterial activity of essential oils of thymus satureioides, grown in two different periods (flowering and after flowering) in the south of Morocco. These two essential oils are obtained by hydrodistillation along with using Clevenger and then they are tested on pathogenic bacteria: Escherichia coli, Mycobacterium smegmatis and Bacillus subtilis, responsible of food borne disease in the region of Fez. The extraction of the essential oil of Thymus satuerioides in the Laboratory of National Institute of Aromatic and Medicinal Plants (NIAMP), Taounate, Morocco for extraction has provided a yield important enough to 0.75 % in Period of flowering compared to gasoline extract of the aerial part after flowering season which is 0.62 %. The chromatographic analyzes and spectrometric have helped to determine the chemical composition of essential oils of approximately 23 constituents of these plants that are different by the harvest period for each one.

Chemical Composition and Antibacterial Activity of Essential Oils of Three Medicinal Plants from Algerian Semi-Arid Climatic Zone

2018 ◽  
Vol 16 (S1) ◽  
pp. S155-S163 ◽  
Author(s):  
S. Mehalaine ◽  
O. Belfadel ◽  
T. Menasria ◽  
A. Messaili
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Antibacterial Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Rosmarinus Officinalis ◽  
Salvia Officinalis ◽  
Thymus Algeriensis

The present study was carried out to determine, for the first time, the chemical composition and antibacterial activity of essential oils derived from the aerial parts of three aromatic plants Thymus algeriensis Boiss & Reut, Rosmarinus officinalis L., and Salvia officinalis L. growing under semiarid conditions. The essential oils were chemically analyzed and identified by gas chromatography (GC) and GC/ mass spectrometry (GC/MS) and their antimicrobial activity was individually evaluated against Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa using both agar disk diffusion and agar dilution methods. The major constituents of Thymus algeriensis essential oil were identified as camphor (13.62%), 1,8-cineol (6.00%), borneol (5.74%), viridiflorol (4.00%), and linalool (3.93%). For Rosmarinus officinalis essential oil, 48 compounds were characterized, of which the main constituents were camphor (17.09%), Z-β-ocimene (10.88%), isoborneol (9.68%), α-bisabolol (7.89%), and borneol (5.11%). While, Salvia officinalis essential oil was characterized by β-thujone (16.44%), followed by viridiflorol (10.93%), camphor (8.99%), 1,8-cineol (8.11%), trans-caryophyllene (5.85%), and α-humulene (4.69%) as the major components. Notably, results from antibacterial screening indicated that Thymus algeriensis and Salvia officinalis essential oils exhibited a strong inhibitory effect against both Escherichia coli and Staphylococcus aureus compared to Rosmarinus officinalis essential oil. Further, less activity was recorded against Pseudomonas aeruginosa for the three tested essential oils.

scholarly journals Chemical Composition and Antibacterial Activities of Eight Plant Essential Oils from Morocco against Escherichia coli Strains Isolated from Different Turkey Organs

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Hassna Jaber ◽  
Asmaa Oubihi ◽  
Imane Ouryemchi ◽  
Rachid Boulamtat ◽  
Ali Oubayoucef ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Gas Chromatography ◽  
Antibacterial Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Mass Spectroscopy ◽  
Plant Essential Oils ◽  
E Coli ◽  
Gas Chromatography Mass Spectroscopy

The aim of the present study was to determine the chemical composition of eight plant essential oils and evaluate their antibacterial activity against Escherichia coli strains isolated from different turkey organs. The essential oils were extracted by hydrodistillation and analyzed using gas chromatography-mass spectroscopy. All essential oil yielded high in a range between 2.2 and 3.12%. Gas chromatography-mass spectroscopy (GC-MS) revealed that the major constituents of Thymus vulgaris, Ocimum basilicum, Artemisia herba-alba, and Syzygium aromaticum oils were thymol (41.39%), linalool (37.16%), camphor (63.69%), and eugenol (80.83%), respectively. Results of the E. coli sensitivity evaluated by the standard antimicrobial sensitivity method varied depending on the organ of isolation. Similarly, the essential oils antimicrobial activity determined by the disc diffusion method varied all along within the organs of isolation. T. vulgaris essential oil showed the highest effective antibacterial activity against E. coli isolated from the throat with an inhibition zone diameter value of up to 23.33 mm. However, all the essential oils showed antibacterial activity and the MIC and MBC values were in the range of 1/3000 to 1/100 (v/v) and the ratios MBC/MIC were equal to 1. In conclusion, this study showed that the essential oils could be promising alternatives to overcome E. coli multiresistance in turkey.

scholarly journals Chemical composition and antibacterial activity of essential oils from Citrus aurantifolia leaves and fruit peel against oral pathogenic bacteria

2018 ◽  
Vol 90 (2) ◽  
pp. 1285-1292 ◽  
Author(s):  
RAIANE S. LEMES ◽  
CASSIA C.F. ALVES ◽  
ELISÂNGELA B.B. ESTEVAM ◽  
MARIANA B. SANTIAGO ◽  
CARLOS H.G. MARTINS ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Chemical Composition ◽  
Essential Oils ◽  
Pathogenic Bacteria ◽  
Fruit Peel ◽  
Citrus Aurantifolia

scholarly journals Correlation between Chemical Composition of Greek Essential Oils and their Antibacterial Activity against Food-borne Pathogens

2007 ◽  
Vol 2 (4) ◽  
pp. 1934578X0700200 ◽  
Author(s):  
Nikos G. Chorianopoulos ◽  
Epameinontas T. Evergetis ◽  
Nektarios Aligiannis ◽  
Sofia Mitakou ◽  
George-John E. Nychas ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Antibacterial Activity ◽  
Chemical Composition ◽  
Essential Oils ◽  
Salmonella Enteritidis ◽  
Principal Component ◽  
Antibacterial Activities ◽  
Gas Chromatography Mass Spectrometry ◽  
Food Borne

The compositions of forty-nine essential oils obtained from plants growing in areas of biodiversity in Greece were determined by means of gas chromatography and gas chromatography–mass spectrometry. The in vitro antibacterial activities of the oils were evaluated against a panel of five common food-borne bacteria ( Escherichia coli 0157:H7 NCTC 12900, Salmonella Enteritidis PT4, Staphylococcus aureus ATCC 6538, Listeria monocytogenes Scott A and Bacillus cereus FSS 134). Monoterpene hydrocarbons, phenolic monoterpenes and alcohols were the major constituents of the oils, but their concentrations varied greatly between the samples examined. The essential oils obtained from the species endemic to Greece ( Satureja and Origanum) had the most potent bactericidal properties. The chemical composition data were statistically processed through Principal Component Analysis (PCA) and correlated with the antibacterial activities, allowing a rough estimation of the potential of the essential oils antibacterial activity.

scholarly journals Chemical Composition and Antibacterial Activity of Essential Oils ofTagetes minuta(Asteraceae) against Selected Plant Pathogenic Bacteria

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Martin Muthee Gakuubi ◽  
John M. Wagacha ◽  
Saifuddin F. Dossaji ◽  
Wycliffe Wanzala
Keyword(s):  
Antibacterial Activity ◽  
Chemical Composition ◽  
Essential Oils ◽  
Pathogenic Bacteria ◽  
Inhibition Zone ◽  
Antibacterial Activities ◽  
Scientific Basis ◽  
Diffusion Method ◽  
Phytopathogenic Bacteria ◽  
Xanthomonas Axonopodis

The objective of this study was to determine the chemical composition and antibacterial activity of essential oils (EOs) ofTagetes minutaagainst three phytopathogenic bacteriaPseudomonas savastanoipv.phaseolicola,Xanthomonas axonopodispv.phaseoli, andXanthomonas axonopodispv.manihotis. The essential oils were extracted using steam distillation method in a modified Clevenger-type apparatus while antibacterial activity of the EOs was evaluated by disc diffusion method. Gas chromatography coupled to mass spectrometry (GC/MS) was used for analysis of the chemical profile of the EOs. Twenty compounds corresponding to 96% of the total essential oils were identified with 70% and 30% of the identified components being monoterpenes and sesquiterpenes, respectively. The essential oils ofT. minutarevealed promising antibacterial activities against the test pathogens withPseudomonas savastanoipv.phaseolicolabeing the most susceptible with mean inhibition zone diameters of 41.83 and 44.83 mm after 24 and 48 hours, respectively.The minimum inhibitory concentrations and minimum bactericidal concentrations of the EOs on the test bacteria were in the ranges of 24–48 mg/mL and 95–190 mg/mL, respectively. These findings provide a scientific basis for the use ofT. minutaessential oils as a botanical pesticide for management of phytopathogenic bacteria.

scholarly journals Chemical Composition and Antibacterial Activity of Cupressus dupreziana A. Camus

2007 ◽  
Vol 2 (9) ◽  
pp. 1934578X0700200 ◽  
Author(s):  
Messaoud Ramdani ◽  
Oualida Rached ◽  
Hocine Laouer ◽  
Meriem El Koli ◽  
Takia Lograda
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Antibacterial Activity ◽  
Chemical Composition ◽  
Essential Oils ◽  
Diffusion Method ◽  
Germacrene D ◽  
And Staphylococcus Aureus

The essential oils obtained by hydrodistillation from the green branchlets of Cupressus dupreziana A. Camus growing wild in Tassili n'Ajjer (Algeria) were analyzed by GC and GC/MS. The main constituents of the essential oils were α-pinene (27.2% - 44.2%), germacrene D (16.2% - 27.2%) and Δ3-carene (14.2% - 26.7%). The oils showed insignificant activity on the growth of Escherichia coli (ATCC 25922), Pseudomonas aeruginosa (ATCC 27853) and Staphylococcus aureus (ATCC 25923), when investigated by the diffusion method.

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