Antimicrobial Activity and Synergic Effect of Cinnamomum burmannii’s Essential Oil & its isolated compound (Cinnamaldehyde)

2013 ◽  
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Synergic Effect ◽  
Isolated Compound

scholarly journals Activity against Streptococcus Pneumoniae of the Essential Oil and 5-(3-Buten-1-ynyl)-2, 2′-bithienyl Isolated from Chrysactinia mexicana Roots

2011 ◽  
Vol 6 (7) ◽  
pp. 1934578X1100600
Author(s):  
Bárbara Missiam Mezari Guevara Campos ◽  
Anabel Torres Cirio ◽  
Verónica Mayela Rivas Galindo ◽  
Ricardo Salazar Aranda ◽  
Noemi Waksman de Torres ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Streptococcus Pneumoniae ◽  
Essential Oil ◽  
Gel Chromatography ◽  
Root Bark ◽  
Reverse Phase ◽  
Mass Detector ◽  
Isolated Compound ◽  
Silica Gel Chromatography

The essential oil of Chrysactinia mexicana retrieved from the root bark was characterized by gas chromatography coupled to a mass detector. The compounds silphiperfol-5-ene, 7-epi- silphiperfol-5-ene, modheph-2-ene, α-isocomene, β-isocomene and methyl-linoleate were identified. The principal compound (76.42%) could not be identified by the library and was further isolated through a reverse phase C-18 chromatography followed by silica gel chromatography and identified as 5-(3-buten-1-ynyl)-2,2′-bithienyl. Both the oil and the isolated compound were tested for their antimicrobial activity against two strains of Streptococcus pneumoniae resistant to β-lactam antibiotics. MICs were 250 μg/mL and 125 μg/mL respectively. This is the first report about extraction of oil and compound 5-(3-buten-1-ynyl)-2, 2′-bithienyl from roots of Chrysactinia mexicana as well as the determination of antimicrobial activity against S. pneumoniae.

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.

Cytotoxicity, antimicrobial activity and composition of essential oil from Tanacetum balsamita L.subsp. balsamita

Planta Medica ◽  
2008 ◽  
Vol 74 (09) ◽  
Author(s):  
SN Ebrahimi ◽  
M Yousefzadi ◽  
A Sonboli ◽  
F Miraghasi ◽  
S Ghiasi ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil

Evaluation of antioxidant and antimicrobial activity of Ziziphora ‎clinopodiodes essential oil eluted at different times

2020 ◽  
Vol 16 ◽  
Author(s):  
Mojgan Alizadeh ◽  
Akram Arianfar ◽  
Ameneh Mohammadi
Keyword(s):  
Antimicrobial Activity ◽  
Antioxidant Activity ◽  
Essential Oil ◽  
Essential Oils ◽  
Antioxidant Activities ◽  
Positive Control ◽  
Essential Oil Composition ◽  
Oil Composition ◽  
Citronellic Acid ◽  
Antimicrobial And Antioxidant Activity

Objective: Ziziphora clinopodioides is an edible medicinal plant belongs to the Labiatae family that widespread all over Iran. It used as culinary and also in cold and cough treatments in Iran. The aim of present work was to evaluate the effect of different timeframes during the hydrodistillation on essential oil composition, antimicrobial and antioxidant activity. Materials and Methods: The essential oil of Z. clinopodiodes was extracted via hydrodistillation with Clevenger apparatus. The fractions of essential oil were captured at 6 times from the beginning of the distillation: (10, 20, 60, 120, 180 and 240 min). The fractions of essential oil were analyzed by GC/MS and their antibacterial, antifungal and antioxidant activities were studied by Disk - well diffusion and DPPH methods respectively. Results: Six distillation times and whole essential oil were captured during the hydrodistillation. Essential oil yield dropped off significantly during distillation progressed (1.0% for 10 min and 0.025 for 240 min). 1,8 Cineol, Isomenthone, Pulegone, Piperitenone and Citronellic acid were major compounds in fractions and they were affected by distillation times. Pulegone was major compound in all of essential oils. In antioxidant activity assay, whole essential oil was stronger than was stronger than positive control and fractions of essential oil, because of higher levels of Isomenthone, Piperitenone and Citronellic acid. Strongest antimicrobial activity against S. aureus, E. coli and C. albicans was observed from 10 min fraction. Conclusion: Our results indicated that distillation time can create essential oils with specific properties and we can achieve to more efficient essential oil in short times.

Chemical Composition and in-vitro antimicrobial screening of leaf essential oil of Plectranthus gerardianus Benth., and isolation of the major constituent of oil

2020 ◽  
Vol 10 ◽  
Author(s):  
Navadha Bhatt ◽  
Navabha Joshi ◽  
Kapil Ghai ◽  
Om Prakash
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Major Constituent ◽  
In Vitro Antimicrobial Activity ◽  
Gram Positive Bacteria ◽  
Medicinal Value ◽  
Leaf Essential Oil ◽  
Plant Families ◽  
Total Oil

Background: The Lamiaceae (Labiatae) is one of the most diverse and widespread plant families’ in terms of ethno medicine and its medicinal value is based on the volatile oils concentration. This family is important for flavour, fragrance and medicinal properties. Manyplants belonging to this family have indigenous value. Method: The essential oil of Plectranthus gerardianusBenth. (Lamiaceae), was analysed by GC and GC-MS analysis, while the major component was isolated and conformed by NMR spectroscopy. Result: The oil was found to be rich in oxygenated monoterpenes, which contribute around 62% of the total oil. The major components identified were fenchone (22.90%) and carvenone oxide (16.75%), besides other mono and sesquiterpenoids. The in-vitro antimicrobial activity of essential oil was tested against three gram negative bacteria viz. Pasteurellamultocida, Escherichia coli, and Salmonella enterica, two gram positive bacteria viz. Staphylococcus aureus and Bacillus subtilis and two fungi viz. Candida albicans and Aspergillusflavus. The antimicrobial activity of the oil was also compared to the antimicrobial activity of leaf essential oil of another Himalayan plant viz. Nepetacoerulescens. Conclusion: The oil showed in-vitro antimicrobial activity against all the microbial strains and can lessen the ever-growing demand of potentially hazardous antibiotics for treatment.

scholarly journals Chemical Composition, Antimicrobial activity, In Vitro Cytotoxicity and Leukotoxin Neutralization of Essential Oil from Origanum vulgare against Aggregatibacter actinomycetemcomitans

Pathogens ◽  
2020 ◽  
Vol 9 (3) ◽  
pp. 192 ◽  
Author(s):  
Sanae Akkaoui ◽  
Anders Johansson ◽  
Maâmar Yagoubi ◽  
Dorte Haubek ◽  
Adnane El hamidi ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Periodontal Diseases ◽  
Aggregatibacter Actinomycetemcomitans ◽  
Psidium Guajava ◽  
Minimal Bactericidal Concentration ◽  
Origanum Vulgare ◽  
Neutralizing Capacity ◽  
Broth Microdilution Method

In this study, the essential oil of Origanum vulgare was evaluated for putative antibacterial activity against six clinical strains and five reference strains of Aggregatibacter actinomycetemcomitans, in comparison with some antimicrobials. The chemical composition of the essential oil was analyzed, using chromatography (CG) and gas chromatography–mass spectrometry coupled (CG–MS). The major compounds in the oil were Carvacrol (32.36%), α-terpineol (16.70%), p-cymene (16.24%), and Thymol (12.05%). The antimicrobial activity was determined by an agar well diffusion test. A broth microdilution method was used to study the minimal inhibitory concentration (MIC). The minimal bactericidal concentration (MBC) was also determined. The cytotoxicity of the essential oil (IC50) was <125 µg/mL for THP-1 cells, which was high in comparison with different MIC values for the A. actinomycetemcomitans strains. O. vulgare essential oil did not interfere with the neutralizing capacity of Psidium guajava against the A. actinomycetemcomitans leukotoxin. In addition, it was shown that the O. vulgare EO had an antibacterial effect against A. actinomycetemcomitans on a similar level as some tested antimicrobials. In view of these findings, we suggest that O.vulgare EO may be used as an adjuvant for prevention and treatment of periodontal diseases associated to A. actinomycetemcomitans. In addition, it can be used together with the previously tested leukotoxin neutralizing Psidium guajava.

scholarly journals Variability in chemical composition and antimicrobial activity of essential oil of Rosa × damascena Herrm. from mountainous regions of Iran

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Mansureh Ghavam ◽  
Afsaneh Afzali ◽  
Maria Manconi ◽  
Gianluigi Bacchetta ◽  
Maria Letizia Manca
Keyword(s):  
Antimicrobial Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Environmental Conditions ◽  
Raw Materials ◽  
Rosa Damascena ◽  
Mountainous Regions ◽  
Aspergillus Brasiliensis ◽  
Suitable Area

Abstract Background Essential oil of Rosa × damascena Herrm. is one of the most valuable and important raw materials for the flavor and fragrance industry. The cultivation of this plant has ancient origins, and Kashan was one of the first mountainous regions of Iran dealing with the cultivation of R. × damascena. In this study, both chemical composition and antimicrobial activity of different rose essential oils obtained from five mountainous areas of Kashan region (Maragh, Qamsar, Sadeh, Javinan, and Kamoo) has been investigated along with the influence of the environmental conditions on these properties. Results Results showed that yield and chemical composition of essential oils obtained from Rosa × damascena were significantly affected by the collection area. In particular, the yield of oils varied from ~0.08 to ~0.132% and citronellol (36.70-9.18%), geraniol (12.82-0.47%), nonadecane (22.73-10.36%), heneicosane (31.7-11.43%), and 1-nonadecene (6.03-3.93%) have been detected as main compounds in all the plants collected, but at different concentrations depending on the collection area. The best fragrance and the highest yield were found in the oil from Kamoo area. Similarly to the chemical composition, the antimicrobial activity of the essential oils was affected by their origin, and essential oil obtained from plants collected from Kamoo area disclosed the highest antibacterial and antifungal efficacy. Its inhibition halos were 17.33±0.58 mm against Aspergillus brasiliensis, 15.67±0.58 mm against Staphylococcus aureus, and 12.33±0. 58 mm against Streptococcus pyogenes. Essential oils of R. damascena were also effective against Gram-negative Pseudomonas aeruginosa and they had a MIC value of 62.50 μg/mL irrespective of the collection area (except the oil from Javinan area). On the contrary, the highest antifungal power against Candida albicans yeast was reached using the essential oil obtained from plants collected in Javinan region (MIC and MBC ~62.50 μg/mL). Conclusions Overall results underline the influence of environmental conditions of the different areas of Kashan region, on the chemical composition of and antimicrobial activity of the essential oils of Rosa × damascena. In addition, results disclosed that Kamoo seemed to be the most suitable area for the competitive cultivation of R. × damascena to the intensive production of aromatic flower oil and natural antimicrobial essential oils.

scholarly journals Edible Films from Carrageenan/Orange Essential Oil/Trehalose—Structure, Optical Properties, and Antimicrobial Activity

Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 332
Author(s):  
Jancikova Simona ◽  
Dordevic Dani ◽  
Sedlacek Petr ◽  
Nejezchlebova Marcela ◽  
Treml Jakub ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Antibacterial Properties ◽  
Edible Films ◽  
Attenuated Total Reflectance ◽  
Practical Application ◽  
Film Properties ◽  
Gram Positive Bacteria ◽  
Edible Packaging ◽  
Orange Essential Oil

The research aim was to use orange essential oil and trehalose in a carrageenan matrix to form edible packaging. The edible packaging experimentally produced by casting from an aqueous solution were evaluated by the following analysis: UV-Vis spectrum, transparency value, transmittance, attenuated total reflectance Fourier-Transform spectroscopy (FTIR), scanning electron microscopy (SEM) and antimicrobial activity. The obtained results showed that the combination of orange essential oil with trehalose decreases the transmittance value in the UV and Vis regions (up to 0.14% ± 0.02% at 356 nm), meaning that produced films can act as a UV protector. Most produced films in the research were resistant to Gram-positive bacteria (Staphylococcus aureus subsp. aureus), though most films did not show antibacterial properties against Gram-negative bacteria and yeasts. FTIR and SEM confirmed that both the amount of carrageenan used and the combination with orange essential oil influenced the compatibility of trehalose with the film matrix. The research showed how different combinations of trehalose, orange essential oils and carrageenan can affect edible film properties. These changes represent important information for further research and the possible practical application of these edible matrices.

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