scholarly journals Chemical Composition, Antioxidant Potential, and Antibacterial Activity of Essential Oil Cones of TunisianCupressus sempervirens

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Aicha Ben Nouri ◽  
Wissal Dhifi ◽  
Sana Bellili ◽  
Hanene Ghazghazi ◽  
Chedia Aouadhi ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Pathogenic Bacteria ◽  
Klebsiella Oxytoca ◽  
Inhibitory Effect ◽  
Major Constituent ◽  
Bacterial Strains ◽  
Cupressus Sempervirens ◽  
Antioxidant Power

The extraction yield of the essential oil (EO) extracted by hydrodistillation from the cones of TunisianCupressus sempervirensL. was of 0.518%. The chemical composition was analyzed by GC-MS. Results showed that this essential oil was mainly composed of monoterpene hydrocarbons (65%) withα-pinene as the major constituent (47.51%). Its antioxidant activity was ascertained by evaluating the total antioxidant capacity and also by evaluating its inhibitory effect against DPPH and ABTS radicals. In addition, it showed a strong antioxidant power against the DPPH (IC50= 151 µg/mL) and ABTS (IC50= 176.454 µg/mL) radicals scavenging. Moreover, its antibacterial activity was tested against different species of pathogenic bacteria (three Gram-positive and eight Gram-negative bacteria). The bacterial strains susceptible to the evaluated oil wereBacillus subtilis,Escherichia coli,Klebsiella oxytoca,Morganella morganii,Shigella, andVibrio cholerae.

scholarly journals Chemical Composition, Antioxidant and Antibacterial Activity of Bunium persicum, Eucalyptus globulus, and Rose Water on Multidrug-Resistant Listeria Species

2018 ◽  
Vol 23 ◽  
pp. 2515690X1775131 ◽  
Author(s):  
Farhad Sharafati Chaleshtori ◽  
Mohamad Saholi ◽  
Reza Sharafati Chaleshtori
Keyword(s):  
Antimicrobial Activity ◽  
Antibacterial Activity ◽  
Essential Oil ◽  
Essential Oils ◽  
Eucalyptus Globulus ◽  
Multidrug Resistant ◽  
Bacterial Strains ◽  
Antioxidant Power ◽  
Listeria Species ◽  
Bunium Persicum

This research was aimed at investigating the antioxidant and antibacterial activity of Bunium persicum, Eucalyptus globulus, and rose water on multidrug-resistant Listeria species. The antibiotic resistance of Listeria spp obtained from seafood samples were determined by the Kirby-Bauer method. The antioxidant and antibacterial activity of the essential oils and extracts were evaluated using ferric reducing antioxidant power and microdilution methods, respectively. A total 2 samples (1.88%) were positive for Listeria spp. L monocytogenes was found to be resistant to ampicillin, amoxicillin/clavulanic acid, penicillin, vancomycin, and kanamycin. B persicum essential oil showed the greatest antioxidant activity (248.56 ± 1.09 µM Fe2+/g). The E globulus essential oil showed consistently strong antimicrobial activity against L monocytogenes and L grayi, while rose water showed no antimicrobial activity against any of the tested bacterial strains. The results showed that after adding the B persicum and E globulus essential oils to bacteria, the cell components’ release increased significantly.

scholarly journals Chemical Composition and Antibacterial Activity of Essential oil from Salvia mukerjeei

2011 ◽  
Vol 6 (12) ◽  
pp. 1934578X1100601 ◽  
Author(s):  
Lalit Mohan ◽  
Anuradha Negi ◽  
Anand B. Melkani ◽  
Vasu Dev
Keyword(s):  
Antibacterial Activity ◽  
Chemical Composition ◽  
Agrobacterium Tumefaciens ◽  
Essential Oil ◽  
Volatile Oil ◽  
Erwinia Chrysanthemi ◽  
Bacterial Strains ◽  
Capillary Gc ◽  
Aerial Parts ◽  
Sesquiterpene Hydrocarbons

The composition of steam volatile oil from aerial parts of Salvia mukerjeei Bennet & Raizada (Lamiaceae) was analyzed by capillary GC and GCMS. The oil was rich in sesquiterpene hydrocarbons (67.3%). Among 71 identified constituents representing 91.7% of the oil, β-caryophyllene (28.7%), γ-muurolene (15.5%) and dehydro-aromadendrane (9.5%), were the principal constituents. The oil was tested against ten bacterial strains and was active against Enterococcus faecalis, Erwinia chrysanthemi and Agrobacterium tumefaciens.

scholarly journals GC/MS analysis, antimicrobial and in vitro anti-cholinesterase activities of the essential oil from Buddleja asiatica

2015 ◽  
Vol 10 (4) ◽  
pp. 891
Author(s):  
Farman Ali Khan ◽  
Abdul Khaliq Jan ◽  
Nasir Mehmood Khan ◽  
Nayab Ali Khan ◽  
Shahnaz Khan
Keyword(s):  
Gas Chromatography ◽  
Antibacterial Activity ◽  
Essential Oil ◽  
Aspergillus Flavus ◽  
Inhibitory Effect ◽  
Major Constituent ◽  
Shigella Boydii ◽  
Cholinesterase Activities ◽  
Mass Spectrometery

<p><em>Buddleja asiatica</em> essential oil from the leaves by hydrodistillation was subjected to gas chromatography/mass spectrometery analysis which revealed the presence of 17 constituents out of which 14 were identified as: four monoterpenes hydrocarbons, four oxygenated monoterpenes, one hydrocarbon sesquiterpenes and five oxygenated sesquiterpenes. The major constituent being found was 1,8-cineole (38.1%) while β-sinensal, 1, 10-seco-1-hydroxy-calamenen-10-one and α-phellandrene were found to be in 11.8%, 10.2% and 5.8%, respectively. The essential oil exhibited 66% strong antibacterial activity against <em>Shigella boydii</em> while in fungicidal assay, it revealed an outstanding 79% inhibition against <em>Aspergillus flavus</em>. The essential oil showed outstanding acetylcholinesterase (IC<sub>50 </sub>5.2 μM) and butyrylcholinesterase inhibitory effect (IC<sub>50</sub> 27.9 μM) as compared to standard drugs respectively.</p><p> </p>

scholarly journals Chemical Composition and Antibacterial Activity of the Essential Oils of Blainvillea Rhomboidea (Asteraceae)

2006 ◽  
Vol 1 (5) ◽  
pp. 1934578X0600100
Author(s):  
Andreza Maria L. Pires ◽  
Maria Rose Jane R. Albuquerque ◽  
Edson P. Nunes ◽  
Vânia M. M. Melo ◽  
Edilberto R. Silveira ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Antibacterial Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Caryophyllene Oxide ◽  
Bacterial Strains ◽  
Aerial Parts ◽  
Leaf Oil

The essential oils of Blainvellea rhomboidea (Asteraceae) were obtained by hydrodistillation and analyzed by GC/MS and GC/FID. Initially, the essential oil from the aerial parts was investigated. From the 18 identified components, 5-indanol (14.5%) followed by p-cymen-8-ol (10.1%), β-caryophyllene (9.6%), caryophyllene oxide (9.6%), limonene (8.6%), terpinolene (7.8%), and spathulenol (7.7%) were the major constituents. The oil was tested against seven bacterial strains and the results showed significant antimicrobial activity. As a consequence, the essential oils from leaves and from flowers were analyzed separately. The major constituents of the leaf oil were terpinolene (21.2%), β-caryophyllene (19.2%), spathulenol (9.1%), caryophyllene oxide (7.4%), and bicyclogermacrene (7.1%), while the oil of the flowers contained terpinolene (28.1%), 5-indanol (16.3%), p-cymen-8-ol (15.3%) and limonene (14.7%) as prevalent compounds. The oils were tested against the same bacterial strains and the flower oil was the more active. These results indicated that the components of the essential oil from flowers seem to be responsible for the activity.

scholarly journals In vitro Antibacterial Activity of Libanotis montana Essential Oil in Combination with Conventional Antibiotics

2014 ◽  
Vol 9 (2) ◽  
pp. 1934578X1400900 ◽  
Author(s):  
Dragoljub L. Miladinović ◽  
Budimir S. Ilić ◽  
Tatjana M. Mihajilov-Krstev ◽  
Jovana L. Jović ◽  
Marija S. Marković
Keyword(s):  
Gas Chromatography ◽  
Antibacterial Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Hierarchical Cluster ◽  
Gas Chromatography Mass Spectrometry ◽  
Bacterial Strains ◽  
Microdilution Method ◽  
Broth Microdilution Method

The chemical composition and antibacterial activity were examined of Libanotis montana Crantz subsp. leiocarpa (Heuff.) Soó. (Apiaceae) essential oil. Gas chromatography and gas chromatography/mass spectrometry were used to analyze the chemical composition of the oil. The antibacterial activity was investigated by the broth microdilution method against thirteen bacterial strains. The interactions of the essential oil and three standard antibiotics: tetracycline, streptomycin and chloramphenicol toward five selected strains were evaluated using the microdilution checkerboard assay in combination with chemometric methods: principal components analysis and hierarchical cluster analysis. Sesquiterpene hydrocarbons were the most abundant compound class in the oil (67.2%), with β-elemene (40.4%) as the major compound. The essential oil exhibited slight antibacterial activity against the tested bacterial strains in vitro, but the combinations L. montana oil-chloramphenicol and L. montana oil-tetracycline exhibited mostly either synergistic or additive interactions. These combinations reduced the minimum effective dose of the antibiotics and, consequently, minimized their adverse side effects. In contrast, the association of L. montana essential oil and streptomycin was characterized by strong antagonistic interactions against Escherichia coli ATCC 25922. In the PCA and HCA analyses, streptomycin stood out and formed a separate group.

scholarly journals Chemical Composition and Biological Activities of Eugenia caryophyllata Thunb Essential Oil

2021 ◽  
pp. 51-62
Author(s):  
Fatiha Abdellah ◽  
Badra Boubakeur ◽  
Noura Ayad ◽  
Laid Boukraa ◽  
Si Mohamed Hammoudi ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Pathogenic Bacteria ◽  
Biological Activities ◽  
Radical Scavenging ◽  
Antioxidant Effect ◽  
Diffusion Method ◽  
Antioxidant Power ◽  
Mic Value

Aims: In this study the antibacterial and antioxidant activities of the essential oil of Eugenia caryophyllata were investigated. Study design: The study contains determination of the chemical composition of the essential oil of E. caryophyllata and the in vitro evaluation of the antibacterial and antioxidant activity of this oil. Place and Duration of Study: The study was carried out at the laboratory of research on local animal products of Ibn-Khaldoun University, Tiaret, Algeria during the period from December 2020 to March 2021. Methodology: The essential oil composition was characterized by gas chromatography/mass spectrophotometrical analyses. The antibacterial activity of this oil was tested against four pathogenic bacteria: Pseudomonas aeruginosa ATCC 27853, Escherichia coli ATCC 25922, Staphylococcus aureus ATCC 33862, Bacillus cereus ATCC 11778 by using disc diffusion method and agar incorporation method to determine the Minimum Inhibitory Concentration (MIC) of the tested oil. The antioxidant activity was evaluated by using DPPH radical scavenging, hydrogen peroxide scavenging assays and ferric reducing antioxidant power (FRAP) assay. Results: Our results have shown a greater antibacterial effect of E. caryophyllata essential oil against all the bacterial tested strains with inhibition zone diameters varied from 17.5 to 20.5 mm and minimal inhibition concentration (MIC) ranged between 0.8 μl / ml and 4.4 μl / ml, B. cereus and S. aureus are the most sensitive species with a MIC value of 0.8 μl / ml, however P. aeruginosa is the most resistant species with a MIC value of 4.4 μl / ml. The result of the antioxidant effect showed that the essential oil of E. caryophyllata is a powerful antioxidant that expresses a higher antioxidant activity than the standard antioxidants: gallic acid, vitamin C and BHT. Conclusion: The obtained results suggest that the essential oil of E. caryophyllata has a strong antibacterial and antioxidant effect and it may be an alternative natural source medicine to prevent and treat many diseases caused by pathogenic bacteria and oxidative stress.

scholarly journals INTERACTION EFFECTS OF LITSEA CUBEBA ESSENTIAL OIL AND ANTIBIOTICS ON ANTIBACTERIAL ACTIVITY AGAINST PATHOGENIC BACTERIA IN AQUACULTURE

2018 ◽  
Vol 55 (5A) ◽  
pp. 66
Author(s):  
Hai Van Nguyen
Keyword(s):  
Antibacterial Activity ◽  
Essential Oil ◽  
Nalidixic Acid ◽  
Pathogenic Bacteria ◽  
Interaction Effects ◽  
Inhibitory Effect ◽  
Antagonistic Effect ◽  
E Coli ◽  
Litsea Cubeba ◽  
Reference Strains

In this study, the interaction effects of Litsea cubeba essential oil (EO) and two antibiotics (ABs) on the antibacterial activity against pathogenic bacteria in aquaculture were investigated. Two reference strains (Escherichia coli ATCC 25922 (E. coli ATCC 25922) and Vibrio parahaemolyticus ATCC 17802 (V. parahaemolyticus ATCC 17802)) and six locally isolated aquatic pathogenic strains (E. coli 9C48, E. coli 11C123, Vibrio 2S4, Vibrio 2N38, V. parahaemolyticus ND201 and V. parahaemolyticus TB81) were used. The inhibitory effects of individual antimicrobial agent (L. cubeba EO, nalidixic acid, and oxytetracycline) were tested against eight strains by using broth microdilution assay in 96-well microplates. A higher inhibitory effect of L. cubeba EO was observed against isolated aquatic pathogenic (MIC = 1.15 - 2.30 mg/mL) than that in the reference strains (MIC = 5.53 mg/mL). The combination effects of L. cubeba EO and ABs often used in the treatment of bacteria effects in aquaculture (nalidixic acid and oxytetracycline) were evaluated by the checkerboard method. Fractional Inhibitory Concentration (FIC) values were determined to characterize the interaction among combinations. Out of 16 AB-EO combinations tested, 11 of them showed a synergistic effect (FIC ≤ 0.5), 3 of them showed an additional effect (0.5 < FIC ≤ 1.0) and 2 of them showed indifferent effect           (1 < FIC ≤ 4), no antagonistic effect was observed. The antimicrobial synergy of EO and AB could enhance efficacy, reduce toxicity, decrease adverse side effects, and lower the dose of ABs used in aquaculture.

Chemical composition and screening of antibacterial activity of essential oil of Pistacia khinjuk against two selected pathogenic bacteria

2017 ◽  
Vol 10 (5) ◽  
pp. 1159 ◽  
Author(s):  
MohammadMahdi Zangeneh ◽  
Reza Tahvilian ◽  
Rohallah Moradi ◽  
Hossein Zhaleh ◽  
Akram Zangeneh ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Pathogenic Bacteria ◽  
Pistacia Khinjuk
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