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

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 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.

scholarly journals In vitro propagation, DNA content and essential oil composition of Teucrium scorodonia L. ssp. scorodonia

2016 ◽  
Vol 127 (1) ◽  
pp. 1-13 ◽  
Author(s):  
Joanna Makowczyńska ◽  
Elwira Sliwinska ◽  
Danuta Kalemba ◽  
Ewelina Piątczak ◽  
Halina Wysokińska
Keyword(s):  
Essential Oil ◽  
Dna Content ◽  
In Vitro Propagation ◽  
Essential Oil Composition ◽  
Oil Composition

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).

Ligularia amplexicaulis (wall.) DC. Essential oil composition and antibacterial activity

2018 ◽  
Vol 30 (3) ◽  
pp. 189-196 ◽  
Author(s):  
Deepshikha Joshi ◽  
Manoj Nailwal ◽  
Lalit Mohan ◽  
Anand B. Melkani
Keyword(s):  
Antibacterial Activity ◽  
Essential Oil ◽  
Essential Oil Composition ◽  
Oil Composition

scholarly journals Premna odorata: Seasonal Metabolic Variation in the Essential Oil Composition of Its Leaf and Verification of Its Anti-Ageing Potential via In Vitro Assays and Molecular Modelling

Biomolecules ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 879
Author(s):  
Ahmed E. Altyar ◽  
Mohamed L. Ashour ◽  
Fadia S. Youssef
Keyword(s):  
Gas Chromatography ◽  
Essential Oil ◽  
Molecular Modelling ◽  
Essential Oil Composition ◽  
In Vitro Assays ◽  
Oil Composition ◽  
Different Seasons ◽  
Metabolic Variation ◽  
Active Centres

The metabolic variation in the essential oil composition of Premna odorata leaves obtained from different seasons was quantitatively and qualitatively determined employing GC/MS (Gas Chromatography coupled with Mass Spectrometry) and GC/FID (Gas chromatography equipped with flame ionization detector) techniques. It displayed the existence of 97 constituents accounting for 94.19%, 92.27%, 91.95% and 92.63% for POS (spring), POM (summer), POA (autumn) and POW (winter) whole essential oils. β-Caryophyllene constituting the main metabolite in the oil in the different seasons. To better visualize the differences between them, GC data were exposed to chemometric analysis. A PCA (principal component analysis) score plot revealed the closeness of POS and POW. Molecular modelling on collagenase, elastase and hyaluronidase enzymes active centres shows that different compounds existing in the essential oil of Premna odorata leaves shows binding to the active sites with variable degrees that suggested its anti-ageing potential. Palmitic acid displayed the highest fitting for both the collagenase and elastase active centres in both pH-based and rule-based ionization methods with ∆G equals −78.27 and −44.77 kcal/mol, respectively; meanwhile, heptacosane showed the highest fitting score in the hyaluronidase centre with ∆G = −43.78 kcal/mol. In vitro assays consolidates the obtained modelling studies in which essential oil shows considerable anti-elastase and anti-hyaluronidase potential as evidenced by their IC50 values being 49.3 and 37.7 μg/mL, respectively; meanwhile, the essential oil of Premna odorata leaves displayed mild anti-collagenase potential. Thus, it can be concluded that Premna odorata could serve as a promising anti-ageing naturally occurring drug that could be effectively incorporated by pharmaceutical industries in cosmetics combating ageing and skin wrinkling.

Sign in / Sign up

Export Citation Format

Share Document