In Vitro Mechanism of Antibacterial Activity of Eucalyptus Essential Oil against Specific Spoilage Organisms in Aquatic Products

2022 ◽  
Author(s):  
Yidan He ◽  
Shangyuan Sang ◽  
Haiqing Tang ◽  
Changrong Ou
Keyword(s):  
Antibacterial Activity ◽  
Essential Oil ◽  
Aquatic Products ◽  
Eucalyptus Essential Oil

Investigation of the Essential Oil of Ormenis africana from Morocco: Revision of Chemical Composition and Antibacterial Activity

2021 ◽  
Vol 1 (30) ◽  
pp. 34-38
Author(s):  
El Hanbali F Barrero A.F
Keyword(s):  
Antibacterial Activity ◽  
Essential Oil ◽  
Essential Oil Composition ◽  
Proteus Vulgaris ◽  
Oil Composition ◽  
Gram Negative ◽  
Main Compound ◽  
Oxygenated Compounds ◽  
Aerial Parts

Abstract- The essential oil composition from the aerial parts of Ormenis africana (Asteraceae), an endemic species from Morocco, has been investigated by GC/MS. A total of 31 compounds were identified, representing 77%. After fractionation by column chromatography, the main compound was isolated and its structure elucidated by NMR spectroscopy. The essential oil was dominated by oxygenated compounds with spathulenol (45.8%) followed by camphor (7.1%), -cadinol (5.9%) and -bisabolol (5.9%) as the main compounds. This oil can be classified as spathulenol-type according to its spathulenol content. In vitro the antibacterial activity of the whole essential oil against three Gram positive (Bacillus cereus, Enterococcus faecalis, Streptococcus C) bacteria and three Gram negative (Proteus vulgaris, Escherichia coli, Pseudomonas aeroginosa) bacteria, showed significant results. Keywords: Asteraceae, Ormenis africana, Essential oil, Spathulenol, Antibacterial activity.

scholarly journals ANTIBACTERIAL AND ANTIOXIDANT ACTIVITIES OF STEM BARK ESSENTIAL OIL CONSTITUENTS OF LITSEA GLUTINOSA C. B. ROB.

2016 ◽  
Vol 8 (12) ◽  
pp. 258
Author(s):  
Arunodaya H. S. ◽  
Krishna V. ◽  
Shashikumar R. ◽  
Girish Kumar K.
Keyword(s):  
Antibacterial Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Stem Bark ◽  
Diffusion Method ◽  
Vibrio Cholera ◽  
Litsea Glutinosa ◽  
Β Carotene ◽  
Mic Value

<p><strong>Objective: </strong>To evaluate the chemical composition, antibacterial and antioxidant properties of stem bark essential oil of <em>Litsea glutinosa </em>C. B. Rob.</p><p><strong>Methods: </strong>The essential oil isolated from stem bark of <em>L. glutinosa </em>and their chemical composition was analyzed by gas chromatography coupled with mass spectrometry detector. The <em>in vitro </em>antibacterial activity of the stem bark essential oil was investigated against eight human pathogenic bacterial clinical isolates using agar disc diffusion method and MIC value was determined by modified resazurin microtitre-plate assay. The antioxidant activity of essential oil was measured by 2, 2-diphenyl-1-picrylhydrazyl radical (DPPH), 2, 2-azinobis-3-ethylbenzothiazoline-6-sulphonate radical cation (ABTS) and β-carotene bleaching assay.</p><p><strong>Results: </strong>GC-MS analysis of stem bark essential oil resulted in the identification of 37 compounds, off which 9,12-octadecadienoic acid (62.57%), hexadecanoic acid (12.68%), stigmast-5-en-3-ol (6.87%) and vitamin E (2.51%) were the main constituents representing 84.63% of the oil. The determination of <em>in vitro</em> antibacterial activity of stem bark essential oil resulted in significant inhibition zone (15.00±0.57 mm) and MIC value (0.15±0.15×10<sup>-2</sup> mg/ml) against the pathogenic bacteria <em>Vibrio cholera</em> followed by <em>Pseudomonas aeruginosa</em> and <em>Salmonella typhi. </em>The results of DPPH radical scavenging (IC<sub>50</sub>:4.540±0.06 µg/ml), ABTS (IC<sub>50</sub>:256.02±0.06 µg/ml) and β-carotene bleaching assay (%I: 78.51±0.42 <strong>%</strong>) showed significant <em>in vitro</em> antioxidant property.</p><p><strong>Conclusion: </strong><em>L. glutinosa</em> stem bark essential oil showed potential antibacterial activity against the <em>Vibrio cholera</em>. The results of this investigation supported the ethnomedical claim of essential oil as a demulcent, antidiarrheal and antioxidant drug.</p>

scholarly journals Essential Oils-Loaded Polymer Particles: Preparation, Characterization and Antimicrobial Property

Polymers ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 1017 ◽  
Author(s):  
Francesca Froiio ◽  
Lorianne Ginot ◽  
Donatella Paolino ◽  
Noureddine Lebaz ◽  
Abderrazzak Bentaher ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Essential Oil ◽  
Essential Oils ◽  
Shelf Life ◽  
Orange Juice ◽  
Water Solubility ◽  
Antimicrobial Property ◽  
Storage Period ◽  
Orange Essential Oil

In the last few years, essential oils (EOs) derived from plants have aroused great interest due to their well-known antimicrobial activity. Unfortunately, they present several limitations in their use, such as photosensitivity, temperature sensitivity, high volatility, and poor water solubility. The encapsulation technique represents a good solution to these problems and ensures protection of the functional properties of essential oils. In this work, bergamot essential oil (BEO) and sweet orange essential oil (OEO) loaded-Eudragit® RS 100 (EuRS100) nanoparticles (NPs) were prepared by using the nanoprecipitation technique. We obtained nanoparticles characterized by a mean diameter of 57 to 208 nm and a positive surface charge (39 to 74 mV). The antibacterial activity of the obtained systems against Escherichia coli was in vitro investigated. We demonstrated that both orange and bergamot essential oils were successfully encapsulated and our nanoparticles have good antibacterial activity. Finally, in order to evaluate the potential applicability of OEONps to prolong fresh orange juice shelf-life, survival of E. coli during a storage period of one week at 25 °C was investigated: Orange essential oil-loaded nanoparticles (OEONPs) have been able to prolong the orange juice shelf life.

scholarly journals Chemical Composition and in Vitro Antibacterial Activity of the Essential Oil of Minthostachys Mollis (Kunth) Griseb Vaught from the Venezuelan Andes

2009 ◽  
Vol 4 (7) ◽  
pp. 1934578X0900400 ◽  
Author(s):  
Flor D. Mora ◽  
María Araque ◽  
Luis B. Rojas ◽  
Rosslyn Ramírez ◽  
Bladimiro Silva ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Essential Oil ◽  
Chemical Constituents ◽  
Salmonella Typhi ◽  
Inhibitory Effect ◽  
Gram Negative Bacteria ◽  
Gram Negative ◽  
Significant Inhibitory Effect ◽  
In Vitro Antibacterial Activity

Chemical constituents of the essential oil from the leaves of Minthostachys mollis (Kunth) Griseb Vaught var. mollis collected in January 2008 at Tuñame, Trujillo State, Venezuela, were separated and identified by GCMS analysis. The essential oil was obtained by hydrodistillation and thirteen components (98.5% of the sample) were identified by comparison with the Wiley GCMS library data base. The two major components were pulegone (55.2%) and trans-menthone (31.5%). The essential oil showed a significant inhibitory effect against Gram-positive and Gram-negative bacteria, especially Bacillus subtilis and Salmonella typhi (4 μg/mL).

Antibacterial Activity and Chemical Composition of the Essential Oil of Grammosciadium platycarpum Boiss. from Iran

2005 ◽  
Vol 60 (1-2) ◽  
pp. 30-34 ◽  
Author(s):  
Ali Sonboli ◽  
Fereshteh Eftekhar ◽  
Morteza Yousefzadi ◽  
Mohammad Reza Kanani
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Antibacterial Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Antibacterial Activities ◽  
Gram Negative Bacteria ◽  
Gram Negative ◽  
Two Samples

The chemical composition of the essential oils obtained from two samples (GP1 and GP2) of Grammosciadium platycarpum Boiss. was analyzed by GC and GC-MS. The analysis of the oils resulted in the identification of twenty-two constituents. Linalool (79.0% - GP1, 81.8% - GP2) and limonene (10.0%, 5.8%) were found to be the major components, respectively. The in vitro antibacterial activities of these oils and their main compounds against seven Gram-positive and Gram-negative bacteria were investigated. The results exhibited that the total oils and their major components possess strong to moderate activities against all the tested bacteria except for Pseudomonas aeruginosa.

scholarly journals Essential oil composition and in vitro antibacterial activity of Chenopodium album subsp. striatum

2018 ◽  
Vol 69 (2) ◽  
pp. 144-155 ◽  
Author(s):  
Negin Khomarlou ◽  
Parviz Aberoomand-Azar ◽  
Ardalan Pasdaran Lashgari ◽  
Hamid Tebyanian ◽  
Ali Hakakian ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Essential Oil ◽  
Chenopodium Album ◽  
Essential Oil Composition ◽  
Oil Composition ◽  
In Vitro Antibacterial Activity

scholarly journals EVALUATION OF ANTIBACTERIAL ACTIVITY OF ESSENTIAL OIL OF CINNAMOMUM ZEYLANICUM, EUGENIA CARYOPHYLLATA, AND ROSMARINUS OFFICINALIS AGAINST STREPTOCOCCUS ORALIS

2017 ◽  
Vol 10 (5) ◽  
pp. 410 ◽  
Author(s):  
Samira Hsaine ◽  
Reda Charof ◽  
Khadija Ounine
Keyword(s):  
Antibacterial Activity ◽  
Essential Oil ◽  
Essential Oils ◽  
Rosmarinus Officinalis ◽  
Diffusion Method ◽  
Cinnamomum Zeylanicum ◽  
Streptococcus Oralis ◽  
In Vitro Antibacterial Activity ◽  
Broth Dilution

Objective: Streptococcus oralis plays an important role in the biofilm formation of dental plaque and the occurrence of periodontal disease. Thepresent study was conducted to evaluate in vitro antibacterial activity of three essential oils, namely, Cinnamomum zeylanicum, Eugenia caryophyllata,and Rosmarinus officinalis against S. oralis.Methods: The antibacterial activity of essential oils was investigated by diffusion method using sterile discs (or aromatograms). The minimuminhibitory concentration (MIC) of essential oils showing important antibacterial activity was measured using the broth dilution method.Results: Evaluation of the antibacterial activity of three essential oils as determined by the aromatogram technique showed that the essential oilof R. officinalis had no effect on S. oralis, while the latter was extremely sensitive to the other two essential oils, but with a higher efficiency of theessential oil of C. zeylanicum (42 mm diameter) than E. caryophyllata (20 mm diameter). Similarly, the MIC and minimum bactericidal concentration(MBC) were higher for the essential oil of C. zeylanicum than the essential oil of E. caryophyllata. The MBC/MIC ratio is of the order of 2. The essentialoils studied therefore appear to exert bactericidal activity against S. oralis.Conclusion: The findings suggest that essential oils of C. zeylanicum and E. caryophyllata may be used as an alternative to synthetic antibiotics.Keywords: Essential oil, Cinnamomum zeylanicum, Eugenia caryophyllata, Rosmarinus officinalis, Antimicrobial activity, Streptococcus oralis.

scholarly journals Chemical Composition and in Vitro Antibacterial Activity of the Essential Oil of Calycolpus Moritzianus (O. Berg) Burret from Mérida, Venezuela

2008 ◽  
Vol 3 (6) ◽  
pp. 1934578X0800300 ◽  
Author(s):  
Teresa Díaz ◽  
Flor D. Mora ◽  
Judith Velasco ◽  
Tulia Díaz ◽  
Luis B. Rojas ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Enterococcus Faecalis ◽  
Chemical Constituents ◽  
Ms Analysis ◽  
In Vitro Antibacterial Activity

The chemical constituents of the essential oil obtained by hydrodistillation from the leaves of Calycolpus moritzianus (O. Berg) Burret, syn Psidium caudatum Mc Vaught, collected in November 2006 in Mérida State, Venezuela, were identified by GC-MS analysis. Thirty components (91.1% of the sample) were identified, of which the seven major ones were β-caryophyllene (21.9%), α-pinene (10.9%), viridiflorol (9.7%), β-selinene (6.1%), α-copaene (6.3%), α-selinene (5.3%) and γ-eudesmol (5.1%). The oil was found to have antibacterial activity against Staphylococcus aureus ATCC (6538) and Enterococcus faecalis ATCC (29212), with MIC values of 60 μg/mL and 180 μg/mL, respectively.

scholarly journals Antibacterial Activity and Essential Oil Composition of Satureja spicigera from Iran

2009 ◽  
Vol 64 (1-2) ◽  
pp. 20-24 ◽  
Author(s):  
Fereshteh Eftekhar ◽  
Fereshteh Raei ◽  
Morteza Yousefzadi ◽  
Samad Nejad Ebrahimi ◽  
Javad Hadian
Keyword(s):  
Antibacterial Activity ◽  
Essential Oil ◽  
Essential Oil Composition ◽  
Diffusion Method ◽  
Resistant Organism ◽  
Disc Diffusion ◽  
Oil Composition ◽  
Bacterial Strains ◽  
Full Flowering

The aerial parts of Satureja spicigera were collected at full flowering stage at Gazvin, Iran. The essential oil was isolated by hydrodistillation and analyzed by a combination of capillary GC and GC-MS. Fourteen compounds were identified, of which carvacrol (53.74%) and thymol (36.03%) were the main constituents, representing 99.12% of the total oil. The in vitro antibacterial activity of the essential oil was determined against six ATCC standard bacterial strains (Bacillus subtilis, Enterococcus faecalis, Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae and Pseudomonas aeruginosa) using disc diffusion as well as measurement of minimum inhibitory concentrations. The disc diffusion results and MIC values indicated high inhibitory activity against the test bacteria. The most susceptible organisms were the Gram-positive B. subtilis and S. aureus followed by E. faecalis, usually resistant to most common antibiotics. Among the Gram-negative bacteria, E. coli and K. pneumoniae were highly sensitive to the different oil concentrations in the disc diffusion method. Finally, P. aeruginosa, a highly resistant organism to most antibiotics, showed moderate susceptibility to Satureja spicigera essential oil.

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