scholarly journals Chemical composition and antioxidant activity of essential oils of Thymus broussonetii Boiss. and Thymus algeriensis Boiss. from Morocco

2014 ◽  
Vol 4 (4) ◽  
pp. 281-286 ◽  
Author(s):  
El mokhtar El Ouariachi ◽  
Imad Hamdani ◽  
Abdelhamid Bouyanzer ◽  
Belkheir Hammouti ◽  
Lhou Majidi ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Chemical Composition ◽  
Essential Oils ◽  
Thymus Algeriensis

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 Thymus algeriensis and Artemisia herba-alba Essential Oils: Chemical Analysis, Antioxidant Potential and In Vivo Anti-Inflammatory, Analgesic Activities, and Acute Toxicity

Molecules ◽  
2021 ◽  
Vol 26 (22) ◽  
pp. 6780
Author(s):  
Khadija El Ouahdani ◽  
Imane Es-safi ◽  
Hamza Mechchate ◽  
Mohammed Al-zahrani ◽  
Ashraf Ahmed Qurtam ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Free Radical ◽  
Medicinal Plants ◽  
Essential Oils ◽  
Iron Reduction ◽  
Radical Scavenging ◽  
Bioactive Molecules ◽  
Potential Toxicity ◽  
Thymus Algeriensis ◽  
Anti Inflammatory

The study of bioactive molecules of natural origin is a focus of current research. Thymus algeriensis and Artemisia herba-alba are two medicinal plants widely used by the Moroccan population in the traditional treatment of several pathologies linked to inflammation. This study aimed to evaluate the single and combined antioxidant, anti-inflammatory and analgesic effects of the essential oils extracted from these two medicinal plants, and also their potential toxicity. Essential oils were extracted using hydro-distillation in a Clevenger-type apparatus. The antioxidant activity was evaluated by two methods: the scavenging of the free radical DPPH, and the reduction in iron. Anti-inflammatory activity was evaluated by evaluating the edema development induced by carrageenan injecting, while the analgesic power was evaluated according to the number of abdominal contortions induced by the intraperitoneal injection of acetic acid (0.7%). The acute oral toxicity was performed to assess the potential toxicity of the studied EOs, followed by an analysis of the blood biochemical parameters. The results of the two antioxidant tests indicated that our extract mixture exhibits good iron reduction capacity and very interesting DPPH free radical scavenging power, with an IC50 of around 4.38 ± 0.98 μg/mL higher than that of the benchmark antioxidant, BHT. The anti-inflammatory test demonstrated that the mixture administered orally at a dose of 150 mg/kg has a better activity, exceeding that of 1% Diclofenac, with a percentage of maximum inhibition of the edema of 89.99 ± 4.08. The number of cramps in the mice treated with the mixture at a dose of 150 mg/kg is significantly lower (29.80 ± 1.92) than those of the group treated with Tramadol (42.00 ± 2.70), respectively. The toxicity results show no signs of toxicity with an LD50 greater than 150 mg/Kg. These interesting results show that the two plants’ EOs had an important anti-inflammatory, analgesic, and antioxidant activity, and also a powerful synergistic effect, which encourages further in-depth investigations on their pharmacological proprieties.

scholarly journals Chemical Composition and Antioxidant Activity of Essential Oils from Leaves of Two Specimens of Eugenia florida DC.

Molecules ◽  
2021 ◽  
Vol 26 (19) ◽  
pp. 5848
Author(s):  
Oberdan Oliveira Ferreira ◽  
Celeste de Jesus Pereira Franco ◽  
Everton Luiz Pompeu Varela ◽  
Sebastião Gomes Silva ◽  
Márcia Moraes Cascaes ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Chemical Composition ◽  
Essential Oils ◽  
Antioxidant Capacity ◽  
Secondary Forest ◽  
Folk Medicine ◽  
Gastrointestinal Problems ◽  
Trolox Equivalent ◽  
Almost All ◽  
Floodplain Area

Eugenia florida DC. belongs to the Myrtaceae family, which is present in almost all of Brazil. This species is popularly known as pitanga-preta or guamirim and is used in folk medicine to treat gastrointestinal problems. In this study, two specimens of Eugenia florida (Efl) were collected in different areas of the same region. Specimen A (EflA) was collected in an area of secondary forest (capoeira), while specimen B (EflB) was collected in a floodplain area. The essential oils (EOs) were extracted from both specimens of Eugenia florida by means of hydrodistillation. Gas chromatography coupled to mass spectrometry (GC/MS) was used to identify the volatile compounds present, and the antioxidant capacity of the EOs was determined by antioxidant capacity (AC-DPPH) and the Trolox equivalent antioxidant (TEAC) assay. For E. florida, limonene (11.98%), spathulenol (10.94%) and α-pinene (5.21%) were identified as the main compounds of the EO extracted from sample A, while sample B comprised selina-3,11-dien-6α-ol (12.03%), eremoligenol (11.0%) and γ-elemene (10.70%). This difference in chemical composition impacted the antioxidant activity of the EOs between the studied samples, especially in sample B of E. florida. This study is the first to report on the antioxidant activity of Eugenia florida DC. essential oils.

Comparison of the Chemical Composition and Antioxidant Activity of Essential Oils from the Leaves and Flowers of Sambucus nigra

2020 ◽  
Vol 54 (5) ◽  
pp. 496-503
Author(s):  
Marcin Szymański ◽  
Marlena Dudek-Makuch ◽  
Ewa Witkowska-Banaszczak ◽  
Wiesława Bylka ◽  
Arkadiusz Szymański
Keyword(s):  
Antioxidant Activity ◽  
Chemical Composition ◽  
Essential Oils ◽  
Sambucus Nigra

Chemical composition, antimicrobial activity and antioxidant activity of Litsea cubeba essential oils in different months

2019 ◽  
Vol 34 (22) ◽  
pp. 3285-3288 ◽  
Author(s):  
Qi-Hui She ◽  
Wen-Shuang Li ◽  
Yuan-Yuan Jiang ◽  
Yi-Chao Wu ◽  
Yong-Hong Zhou ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Antioxidant Activity ◽  
Chemical Composition ◽  
Essential Oils ◽  
Litsea Cubeba

scholarly journals Chemical composition and antioxidant activity of essential oils isolated from Colombian plants

2010 ◽  
Vol 20 (4) ◽  
pp. 568-574 ◽  
Author(s):  
Jesús Olivero-Verbel ◽  
Tulia González-Cervera ◽  
Jorge Güette-Fernandez ◽  
Beatriz Jaramillo-Colorado ◽  
Elena Stashenko
Keyword(s):  
Antioxidant Activity ◽  
Chemical Composition ◽  
Essential Oils
Sign in / Sign up

Export Citation Format

Share Document