scholarly journals Antimicrobial activity of Satureja hortensis L. essential oil against pathogenic microbial strains

2010 ◽  
Vol 62 (1) ◽  
pp. 159-166 ◽  
Author(s):  
Tatjana Mihajilov-Krstev ◽  
Dragan Radnovic ◽  
Dusanka Kitic ◽  
Zorica Stojanovic-Radic ◽  
Bojan Zlatkovic
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Wide Spectrum ◽  
Significant Activity ◽  
Fungal Strains ◽  
Satureja Hortensis ◽  
Conservation Treatment ◽  
Microbial Strains ◽  
Editorial Decision ◽  
Font Color

A hydro-distilled oil of Satureja hortensis L. was investigated for its antimicrobial activity against a panel of 11 bacterial and three fungal strains. The antimicrobial activity was determined using the disk-diffusion and broth microdilution methods. The essential oil of S. hortensis L. showed significant activity against a wide spectrum of Gram (-) bacteria (MIC/MBC=0.025-0.78/0.05-0.78 ?l/ml) and Gram (+) bacteria (MIC/MBC=0.05-0.39/0.05-0.78 ?l/ml), as well as against fungal strains (MIC/MBC=0.20/0.78 ?l/ml). The results indicate that this oil can be used in food conservation, treatment of different diseases of humans, and also for the treatment of plants infected by phytopathogens. <br><br><b><font color="red">Detected autoplagiarism. Link to the Editorial Decision <u><a href="http://dx.doi.org/10.2298/ABS1004251U">10.2298/ABS1004251U</a></u></font></b><br>

scholarly journals Constituents and antimicrobial activity of the essential oils of six Himalayan Nepeta species

2010 ◽  
Vol 75 (6) ◽  
pp. 739-747 ◽  
Author(s):  
Dinesh Bisht ◽  
Rajendra Padalia ◽  
Lalit Singh ◽  
Veena Pande ◽  
Priyanka Lal ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Essential Oils ◽  
Antagonistic Activity ◽  
Significant Activity ◽  
Variable Degree ◽  
Bacterial Strains ◽  
Fungal Strains ◽  
Microbial Strains

The essential oils from six Himalayan Nepeta species, viz. Nepeta leucophylla Benth., Nepeta discolor Royle ex Benth., Nepeta govaniana Benth., Nepeta clarkei Hook f., Nepeta elliptica Royle ex Benth. and Nepeta erecta Benth., were tested for their in vitro antimicrobial activity against six pathogenic bacterial and two fungal strains. The results showed that Pseudomonas aeruginosa was the most sensitive strain tested to the essential oils of Nepeta species. The essential oils of N. elliptica and N. erecta exhibited the highest activity against P. aeruginosa, followed by the essential oils of N. leucophylla and N. clarkei. The essential oils from N. elliptica and N. erecta were also found to be very effective against Serratia marcescens; while the essential oil from N. leucophylla displayed significant activity against Proteus vulgaris and Staphylococcus aureus. Other bacterial strains displayed variable degree of susceptibility against one or more of the tested essential oils. The essential oil from N. leucophylla also showed the highest antifungal activity against both tested fungal strains, viz. Candida albicans and Trichophyton rubrum, followed by the essential oils from N. clarkei, N. govaniana and N. erecta. Iridodial derivatives, viz. iridodial ?-monoenol acetate (25.4 %), dihydroiridodial diacetate (18.2 %) and iridodial dienol diacetate (7.8 %) were identified as the major constituents of N. leucophylla, while the essential oils from N. elliptica and N. erecta were dominated by (7R)-trans, trans nepetalactone (83.4 %) and isoiridomyrmecin (66.7 %), respectively. The essential oil of N. discolor was characterized by 1,8-cineole (25.5 %) and ?-caryophyllene (18.6 %), while N. clarkei was dominated by ?-sesquiphellandrene (22.0 %) and germacrene D (13.0 %). Isoiridomyrmecin (35.2 %) and pregeijerene (20.7 %) were identified as the major constituents of N. govaniana. In general the Nepeta species containing constituents with an iridoid or lactone skeleton were found to have the greater antagonistic activity against most of the microbial strains as compared to those containing regular terpene constituents.

scholarly journals Chemical Composition and Antimicrobial activity of Satureja kitaibelii Essential Oil against Pathogenic Microbial Strains

2011 ◽  
Vol 6 (8) ◽  
pp. 1934578X1100600 ◽  
Author(s):  
Tatjana Mihajilov-Krstev ◽  
Dušanka Kitić ◽  
Dragan Radnović ◽  
Mihajlo Ristić ◽  
Mira Mihajlović-Ukropina ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Wide Spectrum ◽  
Significant Activity ◽  
Skin Infections ◽  
Bacterial Isolates ◽  
High Antimicrobial Activity ◽  
Herbal Tea ◽  
Microbial Strains ◽  
Main Components

Plant species Satureja kitaibelii Wierzb. ex Heuff. is used as a spice and as a natural preservative for food and herbal tea, owing to its characteristic scent and flavor as well as high antimicrobial activity. In the present study, the antimicrobial activity of isolated essential oil of S. kitaibelii was tested against a panel of 30 pathogenic microorganisms (foodborne microbes, selected multiresistant bacterial isolates from the patient wounds and dermatophyte isolates). Limonene (15.54%), p-cymene (9.99%), and borneol (8.91%) appeared as the main components in 44 identified compounds representing 98.44% of the oil. Essential oil of S. kitaibelii showed significant activity against a wide spectrum of foodborne microbes (MIC=0.18-25.5 μg mL−1) and multiresistant bacterial isolates (MIC=6.25-50.0 μg mL−1), as well as against dermatophyte strains (MIC=12.5-50.0 μg mL−1). These results demonstrate that S. kitaibelii essential oil could be used as a natural potential antimicrobial agent against pathogenic strains in the treatment of foodborne disease, wound and skin infections.

In vitro antimicrobial and preliminary phytochemical screening of some Samburu Anti‐diarrhoeal medicinal plants ‐ Kenya

2012 ◽  
Vol 2 (5) ◽  
pp. 217-226
Author(s):  
E. O. Omwenga ◽  
P. O. Okemo ◽  
P. K. Mbugua
Keyword(s):  
Antimicrobial Activity ◽  
Medicinal Plants ◽  
Fungal Pathogens ◽  
Antimicrobial Effect ◽  
Significant Activity ◽  
Bacterial Strains ◽  
Fungal Strains ◽  
Local Isolate ◽  
Agar Disc

The antimicrobial effect of some selected Samburu medicinal plants was evaluated on bacterial strains like Staphylococcus aureus ‐ ATCC 20591, Bacillus subtillis ‐ Local isolate, Salmonella typhi‐ATCC 2202, Escherichia coli‐STD. 25922 and Pseudomonas aeroginosa ‐ ATCC 25852 and fungal strains like Candida albicans ATCC EK138, Aspergillus niger ATCC 16404, Aspergillusflavus‐Local isolate, Fusarium lateritium‐Local isolate, and Penicillium spp.‐ local isolate. Methanol was used as solvent for the extraction from the selected medicinal plants used by the Samburu community. The in vitro antimicrobial activity was performed by agar disc diffusion and micro‐dilution technique. The most susceptible Gram‐positive bacterium was S. aureus, while the most susceptible Gram‐negative bacterium was P. aeroginosa. The extracts of Gomphocarpus fruticosus (L) W.T. Aiton showed less activity against the bacterial strains investigated. The most active antibacterial plants were Euphorbia scarlatica S. Carter, and Euclea divinoram Hiern. Incidentally most of the extracts were inactive against the fungal strains with only a few proving to be slightly active against the C. albicans i.e. Loranthus acaciae Zucc., Kedrostis pseudogijef (Gilg) C. Jeffrey, Euclea divinoram Hiern. and Croton macrostachyus (A. Rich). Benths. The significant antimicrobial activity of active extracts was compared with the standard antimicrobials, cefrodoxima, amoxicillin and fluconazole. The MICs of the most active plants ranged from 18.75mg/ml to 37.50mg/ml. The MBCs ranged between 18.75mg/ml to75mg/ml. These results were significant at P< 0.01. The findings show that most of the medicinal plants used by the Samburu community have some significant activity on the bacterial but not fungal pathogens known to cause diarrhoea.

scholarly journals Screening of antimicrobial activity of essential oil and methanol extract of Satureja hortensis on foodborne bacteria and fungi

2008 ◽  
Vol 25 (No. 2) ◽  
pp. 81-89 ◽  
Author(s):  
A. Adiguzel ◽  
H. Ozer ◽  
H. Kilic ◽  
B. Cetin
Keyword(s):  
Antimicrobial Activity ◽  
Chemical Composition ◽  
Minimum Inhibitory Concentration ◽  
Essential Oil ◽  
Inhibitory Concentration ◽  
Methanol Extract ◽  
Antimicrobial Activities ◽  
Satureja Hortensis ◽  
Bacteria And Fungi

The present work reports the <i>in vitro</i> antimicrobial activities of the essential oil and methanol extract from <i>Satureja hortensis</i> as well as the content of its essential oil. The chemical composition of hydrodistilled essential oil of Satureja hortensis was analysed by means of GC-MS. Thirty constituents were identified. The main constituents of the oil were thymol (40.54%), &gamma;-terpinene (18.56%), carvacrol (13.98%), and <i>p</i>-cymene (8.97). The essential oil of <i>Satureja hortensis</i> exhibited the activity against 25 bacteria, 8 fungi, and a yeast, <i>C. albicans</i>; exerting the Minimum Inhibitory Concentration values (MIC) ranging from 15.62 to 250 &micro;l/ml. Similarly, methanol extract of the plant also showed antimicrobial activity.

Chemical Composition and Antimicrobial Activity of Teucrium Capitatum L. Subsp. Lusitanicum (Schreb.) T. Navarro & Rosua Essential Oil

2020 ◽  
Author(s):  
Haïfa Debbabi ◽  
Ridha El Mokni ◽  
Ibrahim Jlassi ◽  
Rajesh K Joshi ◽  
Saoussen Hammami
Keyword(s):  
Antimicrobial Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Antimicrobial Properties ◽  
Significant Activity ◽  
Bacterial Strains ◽  
Gram Positive Bacteria ◽  
Sesquiterpene Hydrocarbons ◽  
Germacrene D

Abstract Chemical composition and antimicrobial activity of Teucrium capitatum L. subsp. lusitanicum essential oil was investigated for the first time in the present study. Qualitative and quantitative analyses of the chemical composition by gas chromatography and mass spectrometry (GC–FID and GC–MS) revealed the presence of 60 compounds representing 97.6% of the whole constituents. The main compounds were germacrene D (47.1%), spathulenol (5.8%), α-selinene (5.3%), germacrene A (2.9%), δ-cadinene (2.8%) and cubenol (2.7%). In vitro, the antimicrobial activity was investigated against five bacterial strains along with the yeast Candida albicans using broth microdilution assay. T. capitatum subsp. lusitanicum essential oil showed significant activity against the gram-positive bacteria Staphylococcus aureus (MIC = MBC = 78 μg mL−1), Bacillus subtilis (MIC = MBC = 156 μg mL−1) and the yeast C. albicans (MIC = MFC = 156 μg mL−1). The great potential of antimicrobial effects is most likely due to the very high percentage of sesquiterpene hydrocarbons particularly to germacrene D, for which the antimicrobial properties have been previously reported.

Essential Oil of Artemisia judaica L. (ssp. Sahariensis) from Algerian Sahara: Antimicrobial Effects and Mechanisms of Action

2019 ◽  
Author(s):  
N. Halla ◽  
K. Boucherit ◽  
B. Zeragui ◽  
D. Hellal ◽  
A. Bentoumi ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Antimicrobial Activity ◽  
Essential Oil ◽  
Mechanisms Of Action ◽  
Cellular Material ◽  
The Other ◽  
Sensitive Bacterium ◽  
Algerian Sahara ◽  
Microbial Strains ◽  
Saline Medium

The aim of this work was to investigate the essential oil of Artemisia judaica L. (ssp. Sahariensis) originated from south of Algeria by evaluating its antimicrobial activity as well as its mechanisms of action against bacterial and fungal microorganisms. The antimicrobial activity was evaluated against 17 microbial strains. The mechanisms of action of Artemisia judaica essential oil (AJEO) have been studied by the evaluation of the release of cellular material (260 nm), the cell viability, the activity of lipase, and the salt tolerance. The AJEO yield was 1.27 ± 0.24% (w/w). The chemical composition of AJEO was characterized by a high content of piperitone (71.1%). The most sensitive bacterium was Staphylococcus aureus with an MIC of 2.73 mg/mL. AJEO was found to be enough to kill strains tested at least 40% after thirty seconds of incubation and to induce release of cellular material. On the other hand, AJEO showed complete inhibition of lipase activity of Candida albicans cells as well as the ability of cells to form colonies on saline medium. AJEO has a powerful antimicrobial activity against different microbial organisms with different mechanisms of action. AJEO seem to be useful in pharmaceutical, food, and cosmetic application.

scholarly journals Antimicrobial Activity ofSatureja HortensisL. Essential Oil Against Pathogenic Microbial Strains

2009 ◽  
Vol 23 (4) ◽  
pp. 1492-1496 ◽  
Author(s):  
T. Mihajilov-Krstev ◽  
D. Radnovic ◽  
D. Kitic ◽  
Z. Stojanovic-Radic ◽  
B. Zlatkovic
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Microbial Strains

scholarly journals Innovative Antimicrobial Chitosan/ZnO/Ag NPs/Citronella Essential Oil Nanocomposite—Potential Coating for Grapes

Foods ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 1801
Author(s):  
Ludmila Motelica ◽  
Denisa Ficai ◽  
Anton Ficai ◽  
Roxana-Doina Truşcă ◽  
Cornelia-Ioana Ilie ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Antimicrobial Agents ◽  
Nanocomposite Films ◽  
Vapor Permeability ◽  
Synergic Effect ◽  
Ag Nps ◽  
Fungal Strains ◽  
Control Film ◽  
Vis Spectroscopy

New packaging materials based on biopolymers are gaining increasing attention due to many advantages like biodegradability or existence of renewable sources. Grouping more antimicrobials agents in the same packaging can create a synergic effect, resulting in either a better antimicrobial activity against a wider spectrum of spoilage agents or a lower required quantity of antimicrobials. In the present work, we obtained a biodegradable antimicrobial film that can be used as packaging material for food. Films based on chitosan as biodegradable polymer, with ZnO and Ag nanoparticles as filler/antimicrobial agents were fabricated by a casting method. The nanoparticles were loaded with citronella essential oil (CEO) in order to enhance the antimicrobial activity of the nanocomposite films. The tests made on Gram-positive, Gram-negative, and fungal strains indicated a broad-spectrum antimicrobial activity, with inhibition diameters of over 30 mm for bacterial strains and over 20 mm for fungal strains. The synergic effect was evidenced by comparing the antimicrobial results with chitosan/ZnO/CEO or chitosan/Ag/CEO simple films. According to the literature and our preliminary studies, these formulations are suitable as coating for fruits. The obtained nanocomposite films presented lower water vapor permeability values when compared with the chitosan control film. The samples were characterized by SEM, fluorescence and UV-Vis spectroscopy, FTIR spectroscopy and microscopy, and thermal analysis.

scholarly journals Antimicrobial Activity and Chemical Composition of Melaleuca genistifolia Leaf Essential Oil from the Northern Plains of India

2008 ◽  
Vol 3 (10) ◽  
pp. 1934578X0800301 ◽  
Author(s):  
Ajai Kumar ◽  
Santosh K. Srivastava ◽  
Gaurav R. Dwivedi ◽  
Merajuddin Khan ◽  
Mahendra P. Darokar ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Sporothrix Schenckii ◽  
Herbal Medicines ◽  
Methyl Eugenol ◽  
Major Constituent ◽  
Herbal Products ◽  
Fungal Strains ◽  
Highly Active ◽  
Leaf Oil

Biological and chemical investigations were carried out to evaluate the antimicrobial potential of Melaleuca genistifolia leaf oil for herbal medicines. The disk diffusion and micro broth dilution methods were used for the evaluation of the antimicrobial activity of the essential oil and its major constituent, methyl eugenol against the five selected bacterial and five fungal strains. The oil was active against all the tested bacterial and fungal strains. The oil was highly active against Staphylococcus epidermidis and significantly active against S. aureus, Sporothrix schenckii and Trichophyton rubrum, while methyl eugenol was significantly active against Enterococcus faecalis, Streptococcus mutans and Escherichia coli. GC and GC-MS analysis of the oil resulted in the identification of twenty two constituents representing 99.4% of the oil. The chemo type identified had a high methyl eugenol (88.1%) content. The essential oil could be of use for the future development of antimicrobial herbal products.

scholarly journals Cyclopiperettine, A New Amide from Piper nigrum

2017 ◽  
Vol 12 (12) ◽  
pp. 1934578X1701201
Author(s):  
Jie Ren ◽  
Ting Zeng ◽  
Zulfiqar Ali ◽  
Mei Wang ◽  
Jiyeong Bae ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Crude Oil ◽  
2D Nmr ◽  
Piper Nigrum ◽  
Microbial Strains

Cyclopiperettine, a new amide, was isolated from essential oil of Piper nigrum L. together with ten known compounds, including amides, monoterpenoids, and sesquiterpenoids. The structure of cyclopiperettine was established by 1D- and 2D- NMR and GC-MS techniques. Known compounds were identified as α-humulene, β-caryophyllene, caryophyllenol-II, β-elemene, elemol, 1-terpinen-4-ol, nerolidol, pellitorine, piperolein B and piperine. The crude oil and isolated compounds exhibited no antimicrobial activity against seven microbial strains up to 20 μg/mL.

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