scholarly journals Stabilisation potentials of the essential oils of Thymus vulgaris L., Cinnamomum zeylanicum B. and Mentha piperita L. on palm olein at accelerated storage

2020 ◽  
Vol 19 (7) ◽  
pp. 464-477
Author(s):  
Agwanande Ambindei Wilson ◽  
Michel Dongmo Jazet Pierre ◽  
Ngoune Tatsadjieu Leopold ◽  
P. Priya ◽  
P. Nisha
Keyword(s):  
Essential Oils ◽  
Palm Olein ◽  
Mentha Piperita ◽  
Thymus Vulgaris ◽  
Cinnamomum Zeylanicum ◽  
Accelerated Storage

scholarly journals Effect of the essential oils of Thymus vulgaris, Cinnamomum zeylanicum and Mentha piperita on fungal growth and morphology

2017 ◽  
Vol 16 (9) ◽  
pp. 388-399 ◽  
Author(s):  
Agwanande Ambindei Wilson ◽  
Michel Dongmo Jazet Pierre ◽  
Ngoune Tatsadjieu Leopold ◽  
P Priya ◽  
VB Manilal ◽  
...  
Keyword(s):  
Essential Oils ◽  
Fungal Growth ◽  
Mentha Piperita ◽  
Thymus Vulgaris ◽  
Cinnamomum Zeylanicum

scholarly journals Influence of Essential Oils on Post-infection Botrytis Damage in Cut Roses1

2018 ◽  
Vol 36 (2) ◽  
pp. 45-57
Author(s):  
Ben A. Bergmann ◽  
John M. Dole
Keyword(s):  
Essential Oils ◽  
Botrytis Cinerea ◽  
Post Infection ◽  
Gray Mold ◽  
Rosa Hybrida ◽  
Thymus Vulgaris ◽  
Cut Flowers ◽  
Cinnamomum Zeylanicum ◽  
Cool Water ◽  
Thyme Oil

Abstract We assessed the degree to which 16 post-infection treatments controlled Botrytis (Botrytis cinerea Pers. ex. Fr.) damage in cut roses (Rosa × hybrida). Additional experiments examined whether essential oils (EO) of cinnamon (Cinnamomum zeylanicum Blume) leaf (CLO), clove (Eugenia caryophyllata Thunb.) bud (CBO), and thyme (Thymus vulgaris L.) (TO) could reduce damage in Botrytis-infected cut roses. The 16 treatments applied to ‘Light Orlando' cut roses differed in reducing Botrytis damage and causing phytotoxicity damage. Only the synthetic fungicide fludioxonil [applied as 0.23 g · L−1 (0.00024 oz · fl oz−1) Medallion®] resulted in the desirable combination of greatly reduced stem termination frequency due to Botrytis damage and relatively minor flower phytotoxicity. When applied to cut rose ‘Freedom' or cultivars with light colored flowers (‘Cool Water', ‘Jessika', ‘Polar Star', ‘Tiffany'), all EO aqueous solutions caused pronounced phytotoxicity damage, but only TO reduced Botrytis damage significantly compared to untreated flowers. Roses exposed to EO vapor rather than an aqueous solution tended to exhibit less phytotoxicity. Vapors of CLO and CBO tended to reduce Botrytis damage less and caused greater flower phytotoxicity than TO vapor and aqueous fludioxonil. Thyme oil vapor exposures of 4.6 and 9.1 ppm warrant further investigation. Index words: Botrytis blight, Botrytis cinerea Pers. ex. Fr., cut flowers, floriculture, fungicide, gray mold, Rosa × hybrida. Chemicals used in this study: Bacillus subtilis (Cease®), bleach (Clorox®), chlorothalonil (Daconil®), copper sulphate (Phyton® 27), fenhexamide (Elevate®), fludioxonil (Medallion®), hydrogen peroxide (ZeroTol® 2.0), iprodione (Chipco® 26019 Flo), potassium bicarbonate (Milstop®), pyraclostrobin + boscalid (Pageant® Intrinsic®). Species used in this study: Rose (Rosa × hybrida) ‘Cool Water', ‘Freedom', ‘Jessika', ‘Polar Star', ‘Tiffany', Botrytis (Botrytis cinerea Pers. ex. Fr.).

scholarly journals In Vitro Activity of Essential Oils Against Planktonic and Biofilm Cells of Extended-Spectrum β-Lactamase (ESBL)/Carbapenamase-Producing Gram-Negative Bacteria Involved in Human Nosocomial Infections

Antibiotics ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 272 ◽  
Author(s):  
Ramona Iseppi ◽  
Alessandro Di Cerbo ◽  
Piero Aloisi ◽  
Mattia Manelli ◽  
Veronica Pellesi ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Klebsiella Pneumoniae ◽  
Essential Oils ◽  
Disk Diffusion ◽  
Mentha Piperita ◽  
Thymus Vulgaris ◽  
Extended Spectrum ◽  
Disk Diffusion Assay ◽  
Diffusion Assay

The aim of this study was to analyze the antibacterial activity of four essential oils (EOs), Melaleuca alternifolia, Eucalyptus globulus, Mentha piperita, and Thymus vulgaris, in preventing the development and spread of extended-spectrum β-lactamase (ESBL)-producing Escherichia coli and Klebsiella pneumoniae, metallo-beta-lactamase (MBL)-producing Pseudomonas aeruginosa and carbapenemase (KPC)-producing Klebsiella pneumoniae. A total of 60 strains were obtained from the stock collection from the Microbiology Laboratory of Hesperia Hospital, Modena, Italy. Twenty ESBL-producing E. coli, 5 K. pneumoniae, 13 KPC-producing K. pneumoniae, and 20 MBL-producing P. aeruginosa were cultured and reconfirmed as ESBL and carbapenamase producers. Polymerase chain reaction was used for the detection of genes responsible for antibiotic resistance (ESBL and KPC/MBL). Antibacterial activity of the EOs was determined using the agar disk diffusion assay, and minimal inhibitory concentrations (MICs) were also evaluated. Lastly, adhesion capability and biofilm formation on polystyrene and glass surfaces were studied in 24 randomly selected strains. M. alternifolia and T. vulgaris EOs showed the best antibacterial activity against all tested strains and, as revealed by agar disk diffusion assay, M. alternifolia was the most effective, even at low concentrations. This effect was also confirmed by MICs, with values ranging from 0.5 to 16 µg/mL and from 1 to 16 µg/mL, for M. alternifolia and T. vulgaris EOs, respectively. The EOs’ antibacterial activity compared to antibiotics confirmed M. alternifolia EO as the best antibacterial agent. T. vulgaris EO also showed a good antibacterial activity with MICs lower than both reference antibiotics. Lastly, a significant anti-biofilm activity was observed for the two EOs (*P < 0.05 and **P < 0.01 for M. alternifolia and T. vulgaris EOs, respectively). A good antibacterial and anti-biofilm activity of M. alternifolia and T. vulgaris EOs against all selected strains was observed, thus demonstrating a future possible use of these EOs to treat infections caused by ESBL/carbapenemase-producing strains, even in association with antibiotics.

scholarly journals Insecticidal Efficacy of Essential Oils from Cinnamomum zeylanicum, Thymus vulgaris, Ferula assafoetida L on Callosobruchus maculatus F

2020 ◽  
pp. 52-62
Author(s):  
P. Estekhdami ◽  
A. Nasiri Dehsorkhi ◽  
R. Kalvandi
Keyword(s):  
Essential Oils ◽  
Defense Mechanisms ◽  
Callosobruchus Maculatus ◽  
Agricultural Research ◽  
Thymus Vulgaris ◽  
Cinnamomum Zeylanicum ◽  
Insecticidal Efficacy ◽  
Experimental Treatments ◽  
Filter Papers ◽  
Ferula Assafoetida

Introduction: The plants have well-developed defense mechanisms against pests and are excellent sources of new insecticidal substances. Materials and methods: An experiment was conducted on Hamedan Agricultural Research Center, as factorial based on completely randomized blocks in 3 replications during 2009. Experimental treatments included 10 levels concentration with Cinnamomum zeylanicum (0, 5, 10, 15, 20, 25, 75, 100, 200, 300) µl, 7 levels concentration with Thymus vulgaris (0, 0.25, 0.50, 0.75, 10, 20, 30) µl, 6 levels concentration with Ferula assafoetida L (0, 30, 60, 90, 120, 150) µl as the time at 3 levels (8, 24, 48) hours as the second factor. 1 ml of solutiones were applied on filter papers with Whatman No. 1. Then each dried paper was placed and 10 C. maculatus adults was placed. Each set of treatment was repeated 3 times and number of dead insects in was counted at an interval of 8, 24, 48 hours respectively. Conclusion: Percentage mortality was calculated. It has been results that the C. zeylanicum, T. vulgaris, F. assafoetida L essential oils showed 13%, 56%, 10% mortality adult of C. maculatus at dose of 5 µl of C. zeylanicum, 0.25 µl of T. vulgaris, 30 µl of F. assafoetida L respectively. Further concentration increase to 300 µl of C. zeylanicum oil, 30 µl of T. vulgaris, 150 µl F. assafoetida L yielded mortality of 100% against adult C. maculatus respectively.

scholarly journals Absolute Antioxidant Activity of Five Phenol-Rich Essential Oils

Molecules ◽  
2021 ◽  
Vol 26 (17) ◽  
pp. 5237
Author(s):  
Yafang Guo ◽  
Romeo Pizzol ◽  
Simone Gabbanini ◽  
Andrea Baschieri ◽  
Riccardo Amorati ◽  
...  
Keyword(s):  
Essential Oils ◽  
Antioxidant Activities ◽  
Oxygen Uptake Kinetics ◽  
Butylated Hydroxytoluene ◽  
Thymus Vulgaris ◽  
Origanum Vulgare ◽  
Cinnamomum Zeylanicum ◽  
Radical Trapping ◽  
Chain Breaking ◽  
Kinetics Of

Essential oils (EOs) have promising antioxidant activities which are gaining interest as natural alternatives to synthetic antioxidants in the food and cosmetic industries. However, quantitative data on chain-breaking activity and on the kinetics of peroxyl radical trapping are missing. Five phenol-rich EOs were analyzed by GC-MS and studied by oxygen-uptake kinetics in inhibited controlled autoxidations of reference substrates (cumene and squalene). Terpene-rich Thymus vulgaris (thymol 4%; carvacrol 33.9%), Origanum vulgare, (thymol 0.4%; carvacrol 66.2%) and Satureja hortensis, (thymol 1.7%; carvacrol 46.6%), had apparent kinh (30 °C, PhCl) of (1.5 ± 0.3) × 104, (1.3 ± 0.1) × 104 and (1.1 ± 0.3) × 104 M−1s−1, respectively, while phenylpropanoid-rich Eugenia caryophyllus (eugenol 80.8%) and Cinnamomum zeylanicum, (eugenol 81.4%) showed apparent kinh (30 °C, PhCl) of (5.0 ± 0.1) × 103 and (4.9 ± 0.3) × 103 M−1s−1, respectively. All EOs already granted good antioxidant protection of cumene at a concentration of 1 ppm (1 mg/L), the duration being proportional to their phenolic content, which dictated their antioxidant behavior. They also afforded excellent protection of squalene after adjusting their concentration (100 mg/L) to account for the much higher oxidizability of this substrate. All investigated EOs had kinh comparable to synthetic butylated hydroxytoluene (BHT) were are eligible to replace it in the protection of food or cosmetic products.

scholarly journals The Influence of Essential Oils on Gut Microbial Profiles in Pigs

Animals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1734 ◽  
Author(s):  
Modestas Ruzauskas ◽  
Elena Bartkiene ◽  
Arunas Stankevicius ◽  
Jurga Bernatoniene ◽  
Daiva Zadeike ◽  
...  
Keyword(s):  
Essential Oils ◽  
Plant Extract ◽  
Basal Diet ◽  
Biologically Active ◽  
Mentha Piperita ◽  
Thymus Vulgaris ◽  
Metagenomic Sequencing ◽  
Microbial Composition ◽  
Animal Group ◽  
The Impact

In recent years, the intake of ultra-processed foods has increased dramatically worldwide. Missing natural foods in the diet raise the need of biologically active food components that could compensate for this deficiency and help maintain proper immune status. This study used pigs as an animal model for the assessment of the impact of consumption of Origanum vulgare plant extract combined with Mentha piperita and Thymus vulgaris essential oils on microbial profile in intestines. A single group of weaned pigs received basal diet, while the other group basal diet supplemented with plant extract and two essential oils in the form of bilayer tablets prepared using “liquid/solid” phase technology. Metagenomic sequencing was performed with the aim to investigate changes of microbial communities in ileum, caecum, and colon. The results demonstrated that the combination of essential oils was non cytotoxic, and had a positive effect on the microbial composition in the large intestine of pigs due to significant increase in the number of probiotic bacteria. The amount of Lactobacillus was 2.5 times and Bifidobacterium 1.9 times higher in the animal group fed with supplement. The combination, however, had some negative impact on the variety of minor species in the distal part of the ileum. Additional studies need to be performed to obtain knowledge on how combinations of essential oils can change bacterial variety in the proximal part of the gastrointestinal tract.

EFFECT OF ESSENTIAL OILS IN THE CONTROL OF THE Clavibacter michiganensis SUBESPECIE michiganensis IN TOMATO (Lycopersicum esculentum L.) PLANTS

Biotecnia ◽  
2018 ◽  
Vol 20 (3) ◽  
pp. 96-101 ◽  
Author(s):  
Jesús Borboa Flores ◽  
Jesús Ortega García ◽  
Francyelli Regina Costa Becheleni ◽  
Arnoldo Villegas Espinoza ◽  
Francisco Javier Wong-Corral ◽  
...  
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Antimicrobial Properties ◽  
Thymus Vulgaris ◽  
Clavibacter Michiganensis ◽  
Origanum Vulgare ◽  
Cinnamomum Zeylanicum ◽  
Tomato Plants ◽  
Clavibacter Michiganensis Subsp ◽  
Bactericidal Properties

Plants produce compounds with antimicrobial properties that can be used to control diseases of horticultural products, for this reason, the aim of this study was to enlarge the knowledge on the effect of essential oils as an alternative for control for bacterial canker Clavibacter michiganensis subsp. michiganensis (Smith) (Cmm). Essential oil of Lippia palmeri was obtained by hydridestillation from plants collected in Sonora, Mexico. Essential oils of Origanum vulgare, Thymus vulgaris and Cinnamomum zeylanicum were obtained from commercial stores in Hermosillo, Sonora, Mexico. To evaluate the effect of the essential oils on the bacterium Cmm, direct applications in two concentrations (1:1 and 1:5 (v/v)) on tomato plants foliage were carried out. Then, plants were inoculated with 1x10-7 CFU/mL of the bacterium and observed for 12 days. The evaluated parameters were incidence and severity. The essential oils and chemical compounds of Origanum vulgare and Thymus vulgaris had effect against Clavibacter michiganensis subsp. michiganensis up to 9 days after application in a 1:1 (v/v) concentration and up to 12 days after application with the 1:5 (v/v) concentration. The essential oil of Lippia palmeri only had effect until six days after the application with both concentrations; that is to say, only these three types of essential oils had bactericidal properties, since with the essential oil of Cinnamomum zeylanicum the inhibition of Cmm was very limited, both in incidence as in severity.

scholarly journals Antifungal and Antitoxigenic Effects of Selected Essential Oils in Vapors on Green Coffee Beans with Impact on Consumer Acceptability

Foods ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 2993
Author(s):  
Miroslava Hlebová ◽  
Lukas Hleba ◽  
Juraj Medo ◽  
Viktoria Uzsakova ◽  
Pavel Kloucek ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Essential Oils ◽  
Sensory Profile ◽  
Aspergillus Ochraceus ◽  
Mentha Piperita ◽  
Thymus Vulgaris ◽  
Cinnamon Bark ◽  
Toxigenic Fungi ◽  
Litsea Cubeba ◽  
Coffee Beans

The main objective of this study is to evaluate the effect of selected essential oils thyme chemotype linalool (Thymus zygis L.), thyme chemotype tymol (Thymus vulgaris L.), eucalyptus (Eucalyptus globulus Labill.), lavender (Lavandula angustifolia Mill.), mint (Mentha piperita L.), almond (Prunbus dulcis Mill.), cinnamon bark (Cinnamomum zeylanicum Nees), litsea (Litsea cubeba Lour. Pers), lemongrass (Cympogon citrati L. Stapf), and ginger (Zingiber officinalis Rosc.) in the vapor phase on growth, sporulation, and mycotoxins production of two Aspergillus strains (Aspergillus parasiticus CGC34 and Aspergillus ochraceus CGC87), important postharvest pathogens of green and roasted coffee beans. Moreover, the effect of the essential oils (EOs) on the sensory profile of the coffee samples treated with EOs was evaluated. The major components of tested EOs were determined by gas chromatography and mass spectrometry (GC–MS) and gas chromatography with flame ionization detector (GC-FID). The results showed that almond, cinnamon bark, lemongrass, and litsea EOs are able to significantly inhibit the growth, sporulation, and mycotoxins production by toxigenic fungi. Sensory evaluation of coffee beans treated with EOs before and after roasting showed that some EOs (except lemongrass and litsea) do not adversely affect the taste and aroma of coffee beverages. Thus, application of the vapors of almond and cinnamon EOs appears to be an effective way that could serve to protect coffee during its transport and storage from toxigenic fungi.

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