Chemical composition and biological potential of Thymus Willdenowii Boiss. & Reut. essential oil

2019 ◽  
pp. 1-4
Author(s):  
Assia Zeghib ◽  
Claude-Alain Calliste ◽  
Alain Simon ◽  
Rim Charfeddine ◽  
Mahjoub Aouni ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Biological Potential

scholarly journals Composition and Biological Potential of Essential Oil from Thelechitonia trilobata Growing in South Africa

2011 ◽  
Vol 6 (12) ◽  
pp. 1934578X1100601
Author(s):  
Jamie Peebles ◽  
Ephraim Gwebu ◽  
Opeoluwa Oyedeji ◽  
Sarah Nanyonga ◽  
Nokuthula Kunene ◽  
...  
Keyword(s):  
South Africa ◽  
Chemical Composition ◽  
Essential Oil ◽  
Invasive Plant ◽  
Toxicity Tests ◽  
Contact Toxicity ◽  
Agricultural Pests ◽  
Biological Potential ◽  
Germacrene D ◽  
Positive Results

Thelechitonia trilobata is regarded as a troublesome weed that grows to form a dense blanket over the soil preventing the growth of other crops in farmland. Although the plant is regarded as a notorious, invasive plant, its chemical composition and biological potential have not been reported. The essential oil was isolated from the fresh leaves of T. trilobata using hydrodistillation. α-Pinene (21.6%), α-phellendrene (21.0%), limonene (12.8%) and germacrene D (7.5%) were the major constituents of the oil. The essential oil was screened against agricultural pests. The anti-tick properties were tested on Ripicephalus e. ervertsi found on sheep, while repellency, fumigation, and contact toxicity tests were carried out with maize weevils. Except for the contact toxicity test, all other bioassays gave positive results.

Chemical Composition of Yemeni Medicinal Plants Essentials Oils and Their Antibacterial and Antioxidant Activities

2018 ◽  
Vol 18 (3-4) ◽  
pp. 195-203
Author(s):  
Y.N. Otaifah ◽  
A. Bouyahya ◽  
A. Talbaoui ◽  
H. Harhar ◽  
S. El Hajjaji
Keyword(s):  
Staphylococcus Aureus ◽  
Chemical Composition ◽  
Medicinal Plants ◽  
Essential Oil ◽  
Essential Oils ◽  
Antibacterial Effect ◽  
Antioxidant Activities ◽  
Biological Activities ◽  
Biological Potential ◽  
Antioxidant Agents

Medicinal plants have been used since time immemorial to fight against diseases. The biological activities of these plants may be due to the presence of bioactive compounds such as essential oils. The aim of this study was to determine the chemical composition of three Yemen medicinal plants, and e evaluate their antibacterial and antioxidant activities. The chemical composition of essential oils was determined using gas chromatography–mass spectrometry (GC–MS) analysis. The antibacterial effect was evaluated against pathogenic bacterial strains using the micro-platoon method and the antioxidant activity was estimated by DPPH (2,2-diphenyl-1-picrylhydrazyl) scanning radical assay. Essential oils (EOs) are rich in phenolic compound. Carvotanacetone is the main compound of Pulicaria jaubertii (PJ) essential oil (82.35%) and β-maaliene (64.94%) is the major compound of Plectranthus montanus Benth (PMB) essential oil, while, Tarchonanthus camphoratus (TC) essential oil possesses several main compounds such as fenchol (14.5%), α-pinene (12.43%), and α-terpineol (8.58%). Essential oils of PJ and PMB showed remarkable antibacterial effect against Staphylococcus aureus (minimum inhibitory concentration, MIC = 0.25% [v/v]), and PJEO against Escherichia coli (MIC = 0.25%[v/v]); the lowestMBC (minimum bactericidal concentration) values was obtained with PJEO against Staphylococcus aureus (CMI = 0.25% [v/v]). TCEO interestingly showed capacity while scanning the DPPH radical (6.32 mg E Trolox). These findings showed the biological potential of Yemeni aromatic medicinal plants as antibacterial and antioxidant agents. However, further investigations are needed to determine the antibacterial and antioxidant mechanisms of these oils.

Chemical composition, biological activities, and toxicity study of Carduncellus pinnatus essential oil from west Algeria

2021 ◽  
Vol 17 ◽  
Author(s):  
Mohammed Semaoui ◽  
Mohammed El Amine Dib ◽  
Nassim Djabou ◽  
Jean Costa ◽  
Alain Muselli
Keyword(s):  
Gas Chromatography ◽  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Biological Activities ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Bacterial Strains ◽  
Biological Potential ◽  
New Findings

Background: Many species have already been examined regarding their biological activities but there are nevertheless many more which merits examination, among them Carduncellus pinnatus (Desf), that is one of the less abundant and the less frequent aromatic plants of Asteraceae species, it is one species widely distributed in the Mediterranean region. In the present investigation, chemical composition of essential oils of Carduncellus pinnatus and their antioxidant, antimicrobial and antifungal activities were investigated for the first time. Methods: The chemical composition of the essential oils of Carduncellus pinnatus was analyzed by gas chromatography (GC) and gas chromatography mass spectroscopy (GC/MS) during its vegetative cycle. The antioxidant properties were evaluated by DPPH-radical scavenging and FRAP methods. The essential oil was tested on two-gram positive bacteria, three-gram negative bacteria, two filamentous fungi and one yeast. The toxicity of this essential oil was evaluated from several experiments on five mice tested in the laboratory. Results: The chemical composition of essential oils studied by GC and GC-MS showed a total of Twenty-seven compounds constituted mainly by Aplotaxene. Harvest time affected quantitatively but not qualitatively the chemical composition of essential oils. The results showed that Carduncellus pinnatus presented interesting antioxidant property. In order to assess the biological activities of Carduncellus pinnatus, all essential oil samples were combined together to produce a collective essential oil (Coll EO). The Coll EO showed activity on all tested bacterial strains based on the inhibition diameters obtained. The most interesting antimicrobial activity has been observed against Salmonella typhi, Escherichia coli and Staphylococcus aureus with IC50s 0.4, 1.2 and 1.2 g/L, but which remains weak compared to the Gentamicin control, respectively). Regarding antifungal activity, largest inhibition was observed against Fusarium solani (IC50= 0.8 g/L). On the other hand, the toxicity test of Coll EO showed no mortality rate to the concentration of 1g/kg injected to the mice. Conclusion: The results presented here constitutes new findings in the field of the chemical characterization and biological potential of Carduncellus pinnatus.

Hydrodistillation of essential oil from cherry laurel (Prunus laurocerasus) leaves: kinetics and chemical composition

Planta Medica ◽  
2009 ◽  
Vol 75 (09) ◽  
Author(s):  
M Lazić ◽  
I Stanisavljević ◽  
D Veličković ◽  
S Stojičević ◽  
V Veljković
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Cherry Laurel ◽  
Prunus Laurocerasus

Chemical composition of essential oil and hydrolat of Geum iranicum

Planta Medica ◽  
2010 ◽  
Vol 76 (12) ◽  
Author(s):  
S Shahani ◽  
HR Monsef-Esfahani ◽  
R Hajiaghaee ◽  
A Gohari
Keyword(s):  
Chemical Composition ◽  
Essential Oil

STUDY OF CORIANDER SEED OIL (Coriandrum sativum L.)

2010 ◽  
Vol 13 (3) ◽  
pp. 29-38
Author(s):  
Ha Bich Phan ◽  
Thach Ngoc Le
Keyword(s):  
Biological Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Seed Oil ◽  
Coriandrum Sativum ◽  
Conventional Heating ◽  
Geranyl Acetate ◽  
Physical And Chemical ◽  
Coriander Seed Oil ◽  
Coriander Seed

Coriandrum sativum L. belongs to the Apiaceae family, which is cultivated in Dong Nai province, in this paper its seed oil of was studied. The essential oil was extracted by hydrodistillation. We used two methods for activating of hydrodistillation: conventional heating and microwave irradiating. Its physical and chemical indexes were measured. The chemical composition of this oil was identified by GC/MS and quantified by GC/FID. Linalool (75.51-77.21 %), and geranyl acetate (15.64-12.79 %) were the main constituents of the oil which were obtained in 0,32-0.39 % yield. The biological activity of this oil was reported.

Medicinal Plants: Antibacterial Effects and Chemical Composition of Essential Oil of Foeniculum vulgare

2017 ◽  
Vol 8 (01) ◽  
Author(s):  
Azadeh Foroughi ◽  
Pouya Pournaghi ◽  
Fariba Najafi ◽  
Akram Zangeneh ◽  
Mohammad Mahdi Zangeneh ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Medicinal Plants ◽  
Essential Oil ◽  
Antibacterial Properties ◽  
Screen Test ◽  
Antibacterial Activities ◽  
Gas Chromatography Mass Spectrometry ◽  
Resistant Bacteria ◽  
Antibacterial Effects ◽  
Foeniculum Vulgare

Medicinal plants are considered modern resources for producing agents that could act as alternatives to antibiotics in demeanor of antibiotic-resistant bacteria. The aim of the study was to evaluate the chemical composition and antibacterial activities of essential oil of Foeniculum vulgare (FV) against Pseudomonas aeruginosa and Bacillus subtilis. Gas chromatography mass spectrometry was done to specify chemical composion. As a screen test to detect antibacterial properties of the essential oil, agar disk and agar well diffusion methods were employed. Macrobroth tube test was performed to determinate MIC. The results indicated that the most substance found in FV essential oil was Trans-anethole (47.41 %), also the essential oil of FV with 0.007 g/ml concentration has prevented P. aeruginosa and with 0.002 g/ml concentration has prevented B. subtilis from the growth. Thus, the research represents the antibacterial effects of the medical herb on test P. aeruginosa and B. subtilis. We believe that the article provide support to the antibacterial properties of the essential oil. The results indicate the fact that the essential oil from the plant can be useful as medicinal or preservatives composition.

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