scholarly journals Antibacterial mechanism of the action of Enteromorpha linza L. essential oil against Escherichia coli and Salmonella Typhimurium

2015 ◽  
Vol 56 (1) ◽  
Author(s):  
Jayanta Kumar Patra ◽  
Gitishree Das ◽  
Kwang-Hyun Baek
Keyword(s):  
Escherichia Coli ◽  
Essential Oil ◽  
Salmonella Typhimurium ◽  
Antibacterial Mechanism ◽  
Enteromorpha Linza

Composition and Antimicrobial Activity of Achillea Distans Essential Oil

2011 ◽  
Vol 6 (6) ◽  
pp. 1934578X1100600 ◽  
Author(s):  
Angel Konakchiev ◽  
Milka Todorova ◽  
Bozhanka Mikhova ◽  
Antonina Vitkova ◽  
Hristo Najdenski
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antimicrobial Activity ◽  
Candida Albicans ◽  
Essential Oil ◽  
Salmonella Typhimurium ◽  
Moderate Activity ◽  
Proteus Vulgaris ◽  
Oil Composition ◽  
Weak Activity

The essential oil of Achillea distans W. et K. flower heads was analyzed by GC and GC-MS. Altogether 43 components in concentrations more than 0.1% were identified representing 93.5% of the oil composition. The main constituents were 1,8-cineole (16.8%), trans-thujone (9.8%), sabinene (8.2%), borneol (7.5%), β-pinene (6.5%), and camphor (5.8%). The oil showed moderate activity against Staphylococcus aureus and Candida albicans, and weak activity against Salmonella typhimurium, Proteus vulgaris, and Escherichia coli.

scholarly journals RNA-seq analysis of antibacterial mechanism of Cinnamomum camphora essential oil against Escherichia coli

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e11081
Author(s):  
Yutian Yu ◽  
Jie Dong ◽  
Yanlu Wang ◽  
Xi Gong
Keyword(s):  
Escherichia Coli ◽  
Essential Oil ◽  
Essential Oils ◽  
Gene Expression Regulation ◽  
Dry Weight ◽  
Cinnamomum Camphora ◽  
Antibacterial Mechanism ◽  
Rna Seq ◽  
E Coli ◽  
Inhibitory Efficiency

Background Transcriptome analysis plays a central role in elucidating the complexity of gene expression regulation in Escherichia coli. In recent years, the overuse of antibiotics has led to an increase in antimicrobial resistance, which greatly reduces the efficacy of antibacterial drugs and affects people’s health. Therefore, several researchers are focused on finding other materials, which could replace or supplement antibiotic treatment. Methods E. coli was treated with water, acetone and Cinnamomum camphora essential oils, respectively. The antibacterial activity was assessed using the minimum inhibitory concentration (MIC), the minimum bactericidal concentration (MBC), the dry weight and the wet weight of the cells. To explore the antibacterial mechanism of the oil, the RNA-Seq analysis was adopted under three different treatments. Finally, the expression of related genes was verified by Quantitative PCR. Results In this study, we showed that the C. Camphora essential oil exerted a strong antibacterial effect. Our results showed that the inhibitory efficiency increased with increasing of the concentration of essential oil. RNA-seq analysis indicated that the essential oil inhibited the growth of E. coli by inhibiting the metabolism, chemotaxis, and adhesion, meanwhile, life activities were maintained by enhancing E. coli resistance reactions. These results are contributed to uncover the antimicrobial mechanisms of essential oils against E. coli, and the C. Camphora essential oil could be applied as an antibacterial agent to replace or ally with antibiotic.

scholarly journals Influence of lipids and proteins amounts and pH values on the inhibitory effects of Origanum vulgare L. essential oil against Escherichia coli and Salmonella Typhimurium

2020 ◽  
Vol 56 ◽  
Author(s):  
Andrea Sulamita de Jesus Medeiros ◽  
Rhayane Idalyne Carvalho ◽  
Maria Lúcia da Conceição ◽  
Marciane Magnani ◽  
Evandro Leite de Souza
Keyword(s):  
Escherichia Coli ◽  
Essential Oil ◽  
Salmonella Typhimurium ◽  
Inhibitory Effects ◽  
Origanum Vulgare ◽  
Ph Values

Ultrasonication induced nano-emulsification of thyme essential oil: Optimization and antibacterial mechanism against Escherichia coli

Food Control ◽  
2022 ◽  
Vol 133 ◽  
pp. 108609
Author(s):  
Zhehao Yang ◽  
Qiao He ◽  
Balarabe B. Ismail ◽  
Yaqin Hu ◽  
Mingming Guo
Keyword(s):  
Escherichia Coli ◽  
Essential Oil ◽  
Antibacterial Mechanism ◽  
Thyme Essential Oil

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.

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