scholarly journals Determination of the content of individual phenolic compounds in essential oils of plants of the Lamiaceae family

2020 ◽  
Author(s):  
I.L. Danilova ◽  
◽  
L.A. Timasheva ◽  
O.A. Pekhova ◽  
◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Essential Oils ◽  
Internal Standard ◽  
Arithmetic Mean ◽  
Thymus Vulgaris ◽  
Relative Measurement ◽  
Origanum Vulgare ◽  
Monarda Fistulosa ◽  
Satureja Montana

Based on the conducted research, a method with an internal standard for the quantitative determination of the content of individual phenolic compounds – carvacrol and thymol in essential oils of Thymus vulgaris L., Monarda fistulosa L., Origanum vulgare L., Satureja hortensis L., Satureja montana L. was developed. The internal standard – oxygen-containing monocyclic terpene alcohol menthol with a purity of 98.0% – was experimentally determined. Metrological characteristics of the developed method: the convergence of the arithmetic mean of two definitions is not more than 0.3 %; the relative measurement error at P= 95 is not more than 2.0 %.

scholarly journals Effect of plant essential oils on mortality of the stem nematode (Ditylenchus dipsaci)

2009 ◽  
Vol 45 (No. 2) ◽  
pp. 66-73 ◽  
Author(s):  
M. Zouhar ◽  
O. Douda ◽  
D. Lhotský ◽  
R. Pavela
Keyword(s):  
Essential Oils ◽  
Nematicidal Activity ◽  
Thymus Vulgaris ◽  
Aromatic Plants ◽  
Origanum Vulgare ◽  
Medicinal And Aromatic Plants ◽  
Plant Essential Oils ◽  
Nematode Management ◽  
Origanum Compactum ◽  
Ditylenchus Dipsaci

The aim of this study was to assess the nematicidal activity of different essential oils from medicinal and aromatic plants for use in nematode management. Essential oils of <I>Eugenia caryophyllata, Origanum compactum, Origanum vulgare, Thymus matschiana</I> and <I>Thymus vulgaris</I> showed nematicidal activity against <I>Ditylenchus dipsaci.</I>

A study of the synergistic antilisterial effects of a sub-lethal dose of lactic acid and essential oils from Thymus vulgaris L., Rosmarinus officinalis L. and Origanum vulgare L.

2007 ◽  
Vol 104 (2) ◽  
pp. 774-782 ◽  
Author(s):  
Suzana I. Dimitrijević ◽  
Katarina R. Mihajlovski ◽  
Dušan G. Antonović ◽  
Mirjana R. Milanović-Stevanović ◽  
Dušan Ž. Mijin
Keyword(s):  
Lactic Acid ◽  
Essential Oils ◽  
Lethal Dose ◽  
Rosmarinus Officinalis ◽  
Thymus Vulgaris ◽  
Origanum Vulgare ◽  
Rosmarinus Officinalis L

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.

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 Effect of Thymus vulgaris L. and Origanum vulgare L. essential oils on toxicity, food consumption, and biochemical properties of lesser mulberry pyralid Glyphodes pyloalis Walker (Lepidoptera: Pyralidae)

2014 ◽  
Vol 54 (1) ◽  
pp. 53-61 ◽  
Author(s):  
Elham Yazdani ◽  
Jalal Jalali Sendi ◽  
Jalil Hajizadeh
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Leaf Disc ◽  
Instar Larva ◽  
Biochemical Properties ◽  
Activity Level ◽  
Sublethal Dose ◽  
Thymus Vulgaris ◽  
Origanum Vulgare ◽  
Glyphodes Pyloalis

Abstract The essential oils of Thymus vulgaris L. and Origanum vulgare L. were investigated for their toxicity and physiological aspects on the lesser mulberry pyralid Glyphodes pyloalis Walker in controlled condition (24±1°C, 75±5% RH and 16L : 8D). The leaf disc method was used to study acute toxicity, the effect of LC10, LC30, and LC50 on the feeding efficiency of 4th instar larva, and biochemical indices. The essential oil doses of LC10, LC30 and LC50 were estimated to be 0.107%, 0.188% and 0.279% for T. vulgaris, and 0.67%, 1.173% and 1.728% for O. vulgare, respectively. The results showed that T. vulgaris was more toxic than O. vulgare. The essential oil sublethal dose LC30 affected the nutritional indices of 4th instar larvae of G. pyloalis. The essential oils reduced total protein, carbohydrate, and lipid. Some concentrations of essential oils changed the activity level of α-amylase, protease, lipase, general esterases, and glutathione S-transferase (GST) but others showed no effect on these enzymes. It was concluded that the used essential oil concentrations were both toxic to G. pyloalis and showed irreversible effects on key metabolic processes, therefore, the used essential oil concentrations may be considered as alternatives to the classic pest control agents.

scholarly journals Balık Hastalıkları ile Mücadelede Bitki Esansiyel Yağlarının Major Komponentlerinin Önemi Üzerine bir Araştırma

2018 ◽  
Vol 6 (10) ◽  
pp. 1501
Author(s):  
Azime Küçükgül
Keyword(s):  
Phenolic Compounds ◽  
Essential Oil ◽  
Essential Oils ◽  
Thymus Vulgaris ◽  
Therapeutic Effects ◽  
Alpha Pinene ◽  
Phytochemical Components ◽  
In Vivo Effects

The presence of different phytochemical components of essential oil such as tannins, alkaloids, terpenoids and phenolic compounds has antibacterial, antifungal, and anti-inflammatory effects. The aim of this study is to investigate importance of the major components of three herb essential oils (Thymus vulgaris L., Centauriumerythraea Rafn. And Foeniculumvulgare Mill) on challenging with fish diseases. The components of essential oils provided from a commercial firm were made GC/MS analyzes. The major component of T. vulgarewas carvacrol called as phenol, 2-methyl-5-(1-methylethyl) with 40%.The others were Linalool L (15.11%) and benzene, methyl(1-methylethyl)- (12.12%).The richest oil in C. erythraea was bicyclo[3.1.1]hept-2-ene, 2,6,6-trimethyl- (34.90%) called as alpha-pinene, followed by heptacosane (19.15%) and dotriacontane (17.72%), respectively.The evaluation of the essential oil of F. vulgarispresented benzene, 1-methoxy-4-(1-propenyl)- with 67.99%, followed by dl-Limonene (16.03%) and benzene, 1-methoxy-4-(2-propenyl)- (6.97%). The therapeutic effects of thyme are due to its high content of phenolic compounds, particularly carvacrol. The most important compounds of F. vulgare essential oil is anethole, fenchone, limonene that has antibacterial, antioxidant, antifungal and anticancer effects. The previous studies show that alpha pinene significantly inhibits many pathogenic Gram-negative bacteria. In aquaculture studies, in vitro and in vivo effects of the dominant compounds of essential oils in our study are consistent with the previous findings.

scholarly journals Corrigendum: Stojkovic D, Glamoclija J, Ciric A, Nikolic M, Ristic M, Siljegovic J, Sokovic M. Investigation on antibacterial synergism of Origanum vulgare and Thymus vulgaris essential oils. Arch biol sci. 2013;65(2):639-43. DOI: 10.2298/ABS1302639S

2015 ◽  
Vol 67 (4) ◽  
pp. 1441-1441
Author(s):  
E Editorial
Keyword(s):  
Essential Oils ◽  
In Vitro Model ◽  
Medicinal Herbs ◽  
Thymus Vulgaris ◽  
Antibacterial Effects ◽  
Origanum Vulgare ◽  
Vitro Model ◽  
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The authors of the above-referenced article have requested a corrigendum to it. The article should include the following reference: Sokovic, M., Glamoclija, J., Marin, D.P., Brkic, D., and L. J. L. D. van Griensven (2010) Antibacterial Effects of the Essential Oils of Commonly Consumed Medicinal Herbs Using an In Vitro Model. Molecules. 15(11), 7532-7546. <br><br><font color="red"><b> Link to the corrected article <u><a href="http://dx.doi.org/10.2298/ABS1302639S">10.2298/ABS1302639S</a></b></u>

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