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 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>

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.

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.

scholarly journals Comparison between Citral and Pompia Essential Oil Loaded in Phospholipid Vesicles for the Treatment of Skin and Mucosal Infections

Nanomaterials ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 286 ◽  
Author(s):  
Iris Usach ◽  
Elisabetta Margarucci ◽  
Maria Letizia Manca ◽  
Carla Caddeo ◽  
Matteo Aroffu ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Essential Oils ◽  
Human Keratinocytes ◽  
Phospholipid Vesicles ◽  
Citrus Limon ◽  
Bacterial Strains ◽  
Physico Chemical ◽  
Health Promoting

Citrus species extracts are well known sources of bio-functional compounds with health-promoting effects. In particular, essential oils are known for their antibacterial activity due to the high content of terpenes. In this work, the steam-distilled essential oil from the leaves of Citrus limon var. pompia was loaded in phospholipid vesicles. The physico-chemical characteristics of the essential oil loaded vesicles were compared with those of vesicles that were loaded with citral, which is one of the most abundant terpenes of Citrus essential oils. The biocompatibility of the vesicles was assessed in vitro in human keratinocytes. Furthermore, the antimicrobial activity of the vesicles was tested while using different bacterial strains and a yeast: Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, and Candida albicans, respectively. The vesicles were small in size (~140 nm), slightly polydispersed (PI ~ 0.31), highly negatively charged (~ −73 mV), and able to incorporate high amounts of essential oil or citral (E% ~ 86%). Pompia essential oil and citral exhibited antimicrobial activity against all of the assayed microorganisms, with P. aeruginosa being the least sensitive. Citral was slightly more effective than pompia essential oil against E. coli, S. aureus, and C. albicans. The incorporation of citral in vesicles improved its antifungal activity against C. albicans.

scholarly journals Chemical and Biological Investigations of Essential Oils from Stem Barks of Enantia Chlorantha Oliv. and Polyalthia Suaveolens Engler. & Diels. from Cameroon

2008 ◽  
Vol 3 (7) ◽  
pp. 1934578X0800300 ◽  
Author(s):  
Maximilienne Nyegue ◽  
Paul-Henri Amvam-Zollo ◽  
François-Xavier Etoa ◽  
Huguette Agnaniet ◽  
Chantal Menut
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Maximum Activity ◽  
Microsporum Canis ◽  
Significant Activity ◽  
Caryophyllene Oxide ◽  
Bacterial Strains ◽  
Dpph Method ◽  
And Staphylococcus Aureus

The chemical composition and in vitro bioactivities of essential oils obtained by hydrodistillation of barks of Enantia chlorantha and Polyalthia suaveolens, two Annonaceae from Cameroon were investigated. Chemical analyses by GC and GC-MS showed that for both plants sesquiterpenes are predominant, the main constituents being 1,5-epoxysalvial-4(14)-ene (12.8%), caryophyllene oxide (13.4%), humulene epoxide II (8.1%) and spathulenol (7.0%), for E. chlorantha; β-caryophyllene (16.0%), germacrene D (8.5%), e pi-α-cadinol (8.3%), caryophyllene oxide (7.3%), salvia-4(14)-en-1-one (7.3%) and 5-cadinene (6.0%) for P. suaveolens. Evaluation of the antiradical scavenging activity by the 1,1-diphenyl-2-picryhydrazyl (DPPH) method indicated that the P. suaveolens essential oil was more active (SC50= 0.71 g/L) than that from E. chlorantha (8.0 g/L). In both cases, the essential oils were less efficient than BHT, taken as a reference (8.8 10-3g/L). In vitro microbiological screening revealed that E. chlorantha essential oil presents a significant activity against the three bacterial strains, Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus (with a maximum activity > 90% at 2 mg/mL) and six fungal strains, Candida albicans, Microsporum canis, Trychophyton rubrum, Fusarium moniliforme, Aspergillus flavus and Aspergillus niger (with a maximum activity > 75% at 2 mg/mL). The volatile extract of P. suaveolens is globally less efficient, as it does not inhibit the growth of either S. aureus or A. flavus.

scholarly journals Komposisi Minyak Atsiri dan Aktivitas Antimikroba Rimpang Temu Putih dan Jahe Gajah sebagai Fitobiotik Pakan Unggas

2019 ◽  
Vol 6 (2) ◽  
pp. 181
Author(s):  
Laila Nur Rohma ◽  
Laila Nur Rohma ◽  
Osfar Sjofjan ◽  
M. Halim Natsir
Keyword(s):  
Escherichia Coli ◽  
Antimicrobial Activity ◽  
Essential Oil ◽  
Essential Oils ◽  
Feed Additives ◽  
Diffusion Method ◽  
Disc Diffusion ◽  
Activity Test ◽  
Main Component

ABSTRAK                                                                        Imbuhan pakan unggas dapat berasal dari bahan herbal yang mengandung berbagai komponen aktif yang bermanfaat bagi pertumbuhan ternak.Temu putih dan jahe gajah dapat dimanfaatkan sebagai imbuhan pakan karena mengandung minyak atsiri yang dapat berperan sebagai agen antibakteri. Penelitian ini bertujuan untuk mengetahui komponen penyusun minyak atsiri dan aktivitas antimikroba pada rimpang temu putih dan jahe gajah. Penelitian dilakukan dengan percobaan in vitro menggunakan temu putih dan jahe gajah yang diolah menjadi bentuk ekstrak minyak atsiri temu putih dan jahe gajah sebagai materi uji komposisi penyusun minyak atsiri serta bentuktepung dan enkapsulasi sebagai materi uji aktivitas antimikroba. Komposisi minyak atsiri temu putih terdiri dari lima komponen penyusun dengan cis-1,7-octadien-3-yl acetat sebagai komponen utama. Komposisi minyak atsiri jahe gajah terdiri dari tujuh komponen dan benzene,1-(1,5-dimethyl-4-hexenyl)-4-methyl-(CAS) ar-curcumene sebagai komponen utama. Minyak atsiri yang terkandung pada temu putih dan jahe gajah mempunyai peran dalam menghambat mikroba. Uji komposisi penyusun minyak atsiri menggunakan alat GC-MS dan uji aktivitas antimikroba menggunakan metode disc diffusion dan. Hasil dari uji aktivitas antimikroba menunjukkan bahwa temu putih dan jahe gajah dalam bentuk tepung dan enkapsulasi memiliki perbedaan yang sangat nyata (P<0,01) terhadap aktivitas antimikroba pada bakteri asam laktat, Escherichia coli dan Salmonella sp. Campuran temu putih dan jahe gajah (1:1) menunjukkan kemampuan terbaik dalam menghambat pertumbuhan bakteri patogen dengan diameter zona hambat 5,70±0,14 mm  (Escherichia coli) dan 6,88±0,45 mm (Salmonella sp.).Kata Kunci : antimikroba, fitobiotik, jahe gajah, minyak atsiri, temu putihABSTRACTThe poultry feed additives can contain herbal ingredients that contain various beneficial components for livestock growth. White turmeric and giant ginger can be used as feed additives because they contain essential oils that can be used as antibacterial agents. This study aims to determine the constituent components of essential oils and antimicrobial activity in white turmeric and giant ginger rhizomes. The study was carried out by in vitro experiments using white turmeric and giant ginger which were processed into the form of essential oil extract as material for the composition of essential oils test, and powder and encapsulation form as antimicrobial activity test material. The composition of essential oils of white turmeric consists of five constituent components with cis-1,7-octadien-3-yl acetate as the main component. The composition of giant ginger essential oil consists of seven components with benzene, 1- (1,5-dimethyl-4-hexenyl) -4-methyl- (CAS) ar-curcumene as the main component. Essential oils contained in the white turmeric and giant ginger have a role in inhibiting microbes. The composition of the essential oil tested using GC-MS and the antimicrobial activity test used the disc diffusion method. The results of the antimicrobial activity test showed that white turmeric and giant ginger in powder and encapsulation form had significant differences (P <0.01) on antimicrobial activity in lactic acid bacteria, Escherichia coli and Salmonella sp. The mixture of white turmeric and giant ginger (1: 1) showed the best ability to inhibit the growth of pathogenic bacteria with inhibitory zone diameters of 5.70 ± 0.14 mm (Escherichia coli) and 6.88 ± 0.45 mm (Salmonella sp.).Keywords: antimicrobial, essential oil, giant ginger, phytobiotic, white turmeric

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 GC/MS Analysis and Antimicrobial Activity of the Essential Oil of Fresh Leaves of Eucalytus Globulus, and Leaves and Stems of Smyrnium Olusatrum from Constantine (Algeria)

2010 ◽  
Vol 5 (10) ◽  
pp. 1934578X1000501 ◽  
Author(s):  
Habiba Daroui-Mokaddem ◽  
Ahmed Kabouche ◽  
Mabrouka Bouacha ◽  
Boudjemaa Soumati ◽  
Aida El-Azzouny ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Essential Oils ◽  
Eucalyptus Globulus ◽  
Bacterial Strains ◽  
Ms Analysis ◽  
Wide Range ◽  
Main Components ◽  
Type Apparatus

The essential oils of fresh leaves of Eucalyptus globulus L. (Myrtaceae), and leaves and stems of Smyrnium olusatrum L. (Apiaceae), obtained by hydrodistillation in a Clevenger-type apparatus, were analyzed by GC/MS. Twenty compounds were characterized, representing 98.3% of the essential oil of E. globulus, with 1,8-cineole (48.6%), globulol (10.9%), trans-pinocarveol (10.7%), and α-terpineol (6.6%) as main components, while thirty-three compounds were characterized, representing 94.3% of the essential oil of S. olusatrum, with sabinene (27.1%), curzerene (13.7%), methyl-1-benzyl-2-oxocyclooctane carboxylate (12.3%), α-pinene (7.2%), cryptone (7.1%) and β-pinene (5.7%) as the major components. The essential oils of E. globulus and S. olusatrum were tested against a wide range of fungal and bacterial strains. Both oils showed significant antimicrobial activity.

Synergistic Effects of Essential Oils of Ammoides verticillata and Satureja candidissima Against Many Pathogenic Microorganisms

2020 ◽  
Vol 18 (1) ◽  
pp. 72-78 ◽  
Author(s):  
Fatima Benyoucef ◽  
Mohammed El Amine Dib ◽  
Boufeldja Tabti ◽  
Arrar Zoheir ◽  
Jean Costa ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Essential Oils ◽  
Synergistic Effects ◽  
Lactobacillus Rhamnosus ◽  
Salmonella Typhi ◽  
Antimicrobial Activities ◽  
Bacterial Strains ◽  
Gram Negative ◽  
Ammoides Verticillata

Background: Antibiotic resistance is today one of the most serious threats to global health, food security and development. Due to the growing number of infections, treatment becomes more difficult, if not impossible, because of the loss of antibiotic efficacy. Objective: In the present investigation, the chemical composition of essential oils of Ammoides verticillata and Satureja candidissima and their synergistic effects on antimicrobial activities were investigated. Methods: The chemical composition of the essential oil was analyzed by Gas Chromatography (GC) and Gas Chromatography-Mass Spectroscopy (GC/MS). The antimicrobial activity of the essential oils was investigated using dilution-agar method against nine bacterial strains three Gram-negative Escherichia coli (ATCC 25922), Pseudomonas aeruginosa (ATCC 27853) and Salmonella typhi (ATCC 14028), and six Gram-positive: Staphylococcus aureus (ATCC 43300,) Clostridium sporogenes (ATCC 19404), Bacillus subtilis (ATCC 6633), Enterococcus faecalis (ATCC 7314), Lactobacillus rhamnosus (ATCC 53103) and Bacillus cereus (ATCC 14579). Results: The essential oil of A. verticillata was characterized principally by carvacrol (44,3%), Limonene (19,3%) and p-cymene (19,2%). The constituents identified of S. candidissima essential oil were principally oxygenated monoterpenes represented by pulegone (70,4%). The essential oil of A. verticillata had a good antimicrobial activity against four bacterial strains (Escherichia coli, Salmonella typhi, Lactobacillus rhamnosus and Bacillus cereus) with MIC and MBC values between 0.2-0.4 µl/ml and 0.2-6.2 µl/ml, respectively. While, S. candidissima essential oil had moderate antimicrobial activities against all strains with MIC and MBC values between 1.5-6.2 µl/ml and 6.2-12.5 µl/ml, respectively. The results of antimicrobial activity of essential oils blend presented higher antimicrobial activity against all tested bacteria with MIC and MBC values between 0.3-1.5 µl/ml and 0.4-6.2 µl/ml, respectively. Conclusion: The essential oils blend presented high antimicrobial activity compared to virgin oils. This activity can be due to the association of active compounds such as carvacrol and pulegone. These findings provide a new source of drugs that may help in therapy to lead to the development of a new treatment based on a combination of these essential oils against gram-negative and gram-positive bacteria that continue to pose a threat to public health.

scholarly journals In VitroAntimicrobial Activity of Essential Oil ofThymus schimperi,Matricaria chamomilla,Eucalyptus globulus, andRosmarinus officinalis

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Awol Mekonnen ◽  
Berhanu Yitayew ◽  
Alemnesh Tesema ◽  
Solomon Taddese
Keyword(s):  
Antimicrobial Activity ◽  
Minimum Inhibitory Concentration ◽  
Essential Oil ◽  
Essential Oils ◽  
Inhibitory Concentration ◽  
Antimicrobial Activities ◽  
Diffusion Method ◽  
Drug Preparation ◽  
Bacteria And Fungi

In this study, thein vitroantimicrobial activities of four plant essential oils (T. schimperi,E. globulus,R. officinalis, andM. Chamomilla) were evaluated against bacteria and fungi. The studies were carried out using agar diffusion method for screening the most effective essential oils and agar dilution to determine minimum inhibitory concentration of the essential oils. Results of this study revealed that essential oils ofT. schimperi,E. globulus, andR. officinaliswere active against bacteria and some fungi. The antimicrobial effect ofM. chamomillawas found to be weaker and did not show any antimicrobial activity. The minimum inhibitory concentration values ofT. schimperiwere<15.75 mg/mL for most of the bacteria and fungi used in this study. The minimum inhibitory concentration values of the other essential oils were in the range of 15.75–36.33 mg/mL against tested bacteria. This study highlighted the antimicrobial activity of the essential oil ofE. globulus,M. chamomilla,T. Schimperi, andR. officinalis. The results indicated thatT. schimperihave shown strong antimicrobial activity which could be potential candidates for preparation of antimicrobial drug preparation.

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