scholarly journals Preparation and antimicrobial activity of thyme essential oil microcapsules prepared with gum arabic

RSC Advances ◽  
2019 ◽  
Vol 9 (34) ◽  
pp. 19740-19747 ◽  
Author(s):  
Chenchen Cai ◽  
Ruijia Ma ◽  
Mengwen Duan ◽  
Dengjun Lu
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Gum Arabic ◽  
Thyme Essential Oil ◽  
First Time

The gum arabic was, for the first time, used as an emulsifier for microcapsulation of essential oil.

Antimicrobial activity of thyme essential oil nanoemulsions on spoilage bacteria of fish and food-borne pathogens

2020 ◽  
Vol 36 ◽  
pp. 100635 ◽  
Author(s):  
Yesim Ozogul ◽  
Esmeray Kuley Boğa ◽  
Ismail Akyol ◽  
Mustafa Durmus ◽  
Yılmaz Ucar ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Food Borne Pathogens ◽  
Thyme Essential Oil ◽  
Food Borne ◽  
Spoilage Bacteria

scholarly journals STUDY OF COMPONENT COMPOSITION AND ANTIMICROBIAL ACTIVITY OF ACHILLEA NOBILIS L. ESSENTIAL OIL

2021 ◽  
Vol 91 (1) ◽  
pp. 36-41
Author(s):  
E. G. Kerimli ◽  
S. V. Serkerov
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Antimicrobial Activity ◽  
Essential Oil ◽  
Component Composition ◽  
Gas Chromatography Mass Spectrometry ◽  
High Antimicrobial Activity ◽  
Spectrometry Method ◽  
Mass Spectrometry Method ◽  
First Time

The component composition of nobleyarrow L. essential oil growing in Azerbaijan was studied for the first time by gas chromatography-mass spectrometry method. 35 components, mainly terpenoid compounds, are identified in the essential oil of which the main ones are 15 components: artemisia ketone (23,7%), α-thujone (22,4%), 2-bornanone (6,4%), eudesma-7(11)-en-4-ol (6,3%), eucalyptol (4,5%), cubenol (3,3%), lavandulol (3,0%), β-thujone (2,9%), β-eudesmol (2,7%), methyl hinokiate (2,1%), terpinene-4-ol (1,7%), 1,2-longidione (1,3%), limonen-6-ol, pivalate (1,2%), neryl (S)-2-methylbutanoate (1,1%), сaryophyllene oxide (1,0%). As a result of noble yarrow essential oil research it was determined that, essential oil has high antimicrobial activity relative to Staphylacoccus aureus.

scholarly journals Chemical Profiling of Pistacia lentiscus var. Chia Resin and Essential Oil: Ageing Markers and Antimicrobial Activity

Processes ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 418
Author(s):  
Vasiliki K. Pachi ◽  
Eleni V. Mikropoulou ◽  
Sofia Dimou ◽  
Mariangela Dionysopoulou ◽  
Aikaterini Argyropoulou ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Rhizopus Oryzae ◽  
Chemical Characterization ◽  
Mucor Circinelloides ◽  
Moderate Activity ◽  
Pistacia Lentiscus ◽  
Chemical Profiling ◽  
Chios Mastic Gum ◽  
First Time

Chios Mastic Gum (CMG) and Chios Mastic Oil (CMO) are two unique products of the tree Pistacia lentiscus var. Chia, cultivated exclusively on the Greek island of Chios. In the present study, the method proposed by the European Pharmacopoeia for mastic identification was employed using HPTLC together with an in-house method. A GC-MS methodology was also developed for the chemical characterization of CMOs. α-Pinene and β-myrcene were found in abundance in the fresh oils; however, in the oil of the aged collection, oxygenated monoterpenes and benzenoids such as verbenone, pinocarveol, and α-campholenal were found at the highest rates. Additionally, the antimicrobial activity of Chios Mastic Gums (CMGs) with their respective Chios Mastic Oils (CMOs) was evaluated, with growth tests against the fungi Aspergillus nidulans, Aspergillus fumigatus, Candida albicans, Mucor circinelloides, and Rhizopus oryzae, and the bacteria Escherichia coli, Pseudomonas aeruginosa and Bacillus subtilis, with the samples exhibiting a moderate activity. To our knowledge, this is the first time that an HPTLC method is proposed for the analysis of mastic and its essential oil and that a standardized methodology is followed for the distillation of CMO with a parallel assessment of the ageing effect on the oil’s composition.

The Antimicrobial Activity of Thyme Essential Oil Against Multidrug Resistant Clinical Bacterial Strains

2012 ◽  
Vol 18 (2) ◽  
pp. 137-148 ◽  
Author(s):  
Monika Sienkiewicz ◽  
Monika Łysakowska ◽  
Paweł Denys ◽  
Edward Kowalczyk
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Multidrug Resistant ◽  
Bacterial Strains ◽  
Thyme Essential Oil

scholarly journals Potential of thyme essential oil on arugula sanitization

2019 ◽  
Vol 43 ◽  
Author(s):  
Roseli Jacobi Veloso ◽  
Nei Fronza ◽  
Alvaro Vargas Júnior ◽  
Vânia Silva Carvalho ◽  
Miriam Fumiko Fujinawa ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Antibacterial Activity ◽  
Essential Oil ◽  
Shelf Life ◽  
Sodium Hypochlorite ◽  
Active Chlorine ◽  
Minimally Processed ◽  
E Coli ◽  
Thyme Essential Oil

ABSTRACT Essential oils from plants are an important alternative source of antimicrobial compounds against important pathogens for food safety. This study aimed to evaluate the in vitro antimicrobial activity of thyme essential oil (Thymus vulgaris) and to apply it in the sanitization of minimally processed arugula (Eruca sativa), aiming to increase the safety and shelf life of arugula. The in vitro antibacterial activity of the essential oil was evaluated by disc diffusion assays and determining the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) against different foodborne pathogens. Thereafter, a “challenge test” was carried out to evaluate the antibacterial activity of the thyme essential oil (0.2%) on the sanitization of arugula inoculated with Escherichia coli (3 log CFU mL-1) compared to sodium hypochlorite (120 ppm of active chlorine). Afterwards, an experiment of applying the thyme essential oil (0.2%) as a sanitizing agent in minimally processed arugula was carried out to evaluate the vegetable shelf life compared to sodium hypochlorite (120 ppm of active chlorine). The arugula was stored at 8 °C for 7 days, and periodically, the number of aerobic mesophilic microorganisms, pH and titratable acidity were determined, and the color of the samples was evaluated. The thyme essential oil had strong antimicrobial activity in vitro against all species of bacteria tested. In the experiments in situ, the thyme essential oil (0.2%) and sodium hypochlorite (120 ppm of active chlorine) were not efficient in eliminating the inoculated E. coli from minimally processed arugula, and they did not result in an extension of the shelf life of the arugula in comparison to the control (p>0.05). However, the growth rate of the E. coli population over time on the arugula samples sanitized with the thyme essential oil (0.2%) was low, which indicates a positive effect of the essential oil, which may be optimized with future adjustments in the concentration and immersion time for the arugula sanitization.

scholarly journals Preparation, characterization and antimicrobial activity of chitosan microparticles with thyme essential oil

2014 ◽  
Vol 68 (6) ◽  
pp. 721-729 ◽  
Author(s):  
Danijela Pecarski ◽  
Zorica Knezevic-Jugovic ◽  
Suzana Dimitrijevic-Brankovic ◽  
Katarina Mihajilovski ◽  
Slobodan Jankovic
Keyword(s):  
Drug Delivery ◽  
Antimicrobial Activity ◽  
Particle Size ◽  
Essential Oil ◽  
Essential Oils ◽  
Drug Delivery System ◽  
Delivery System ◽  
Thyme Oil ◽  
Chitosan Microparticles ◽  
Thyme Essential Oil

Considering the therapeutic effects of formulations with violate essential oils, development of an available drug delivery system is of great interest, especially assuming the fact that using essential oils as antimicrobial agents is a rather expanded in antimicrobial therapy nowadays. In this work, chitosan microparticles with encapsulated thyme essential oil were prepared by the emulsion cross-linking method. The effect of thyme oil and glutaraldehyde initial concentrations on particle size, morphology, and particle size distribution was investigated. In addition, the influence of these parameters on the encapsulation of thyme oil in chitosan microparticles, concerning thyme oil loadings and encapsulation efficiency was also tested. The particles showed a spherical shape with an average diameter from 4.71?1.42 to 13.65?4.34 m, depending on the concentration of the essential oil and glutaraldehyde that were used. The diameter of microparticles appeared to increase with increasing the thyme essential oil concentration, and decreased with the increase of glutaraldehyde concentration. It was shown that the concentration of glutaraldehyde did not affect the degree of encapsulation, but the increase in the initial concentration of thyme oil increased the degree of encapsulation of this essential oil in chitosan microparticles. All particles containing thyme essential oil, as well as essential oil of thyme itself showed significant antimicrobial activity against Staphylococcus aureus ATCC 25923, Esherichia coli ATCC 25922, Candida albicans ATCC 24433, Enterococcus faecalis ATCC 25929. This study showed a great potential of the use of thyme essential oil as an antimicrobial agent, especially when encapsulated in a drug delivery system with controlled release of the active antimicrobial component.

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