Effects of different factors influencing the essential oil properties of Thymus vulgaris L.

Pluhár, Zsuzsanna; Szabó, Dóra; Sárosi, Szilvia

doi:10.14719/pst.2016.3.3.241

Cited by 8 publications

(5 citation statements)

References 61 publications

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“…The differences can be due to various geographic location, weather conditions, plant organs, extraction methods, soil types of the harvested areas and (Afshari et al, 2016;Pluhár et al, 2016;Rowshan et al, 2013). Further, recent studies have shown that the biological effects of plant essential oils are directly related to their principal components and even their synergistic effects with other components (Isman et al, 2011;Regnault-Roger et al, 2011).…”

Section: Resultsmentioning

confidence: 99%

THE ESSENTIAL OIL EXTRACTED FROM Thymus kotschyanus BOISS. & HOHEN AS A NATURAL SUBSTANCE FOR MANAGEMENT OF THE LESSER GRAIN BORER, Rhyzopertha dominica F.

Ebadollahi¹

2018

AgricultForest

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Plant essential oils as promising bio-rational agents have been considered for management of damaging insect pests because they are naturally biodegradable and safe to the non-target organisms. In the present study, the fumigant toxicity of essential oil from Thymus kotschyanus aerial parts was assessed against a major Coleopteran insect pest Rhyzopertha dominica and this bio-effect was optimised and modelled using Response Surface Methodology (RSM).Optimization of the fumigant toxicity displayed a concentration of 51.720 µl L-1 was adequate to kill 72.752% of insect population after 60.0 h exposure time. The best model for predicting of insecticidal effect was a third-grade model. Results of the present study recommended a high potential of T. kotschyanus essential oil for management of a major stored-product insect pest R. dominica and prediction of this bio-effect using response surface methodology.

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Section: Resultsmentioning

confidence: 99%

THE ESSENTIAL OIL EXTRACTED FROM Thymus kotschyanus BOISS. & HOHEN AS A NATURAL SUBSTANCE FOR MANAGEMENT OF THE LESSER GRAIN BORER, Rhyzopertha dominica F.

Ebadollahi¹

2018

AgricultForest

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“…Application of essential oils (EOs) as natural antimicrobial agents became widespread in the food industry, pharmaceutical, and medicinal products over the past decades [ 12 , 13 ]. The composition of EOs can be influenced by several factors: environmental factors, vegetation period, collection technique, distillation procedure, chemotype, and collected herbal parts as well [ 14 – 18 ]. Therefore, different factors may alter the quantity of the main compounds, besides it also leads to modified biological activity [ 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

“…Thymus vulgaris L. is a Mediterranean aromatic plant, which belongs to the Lamiaceae family. Among the six chemotypes, the thymol-dominated one is the most widespread in the natural habitats [ 18 ]. According to previous reports, the antimicrobial activity is probably influenced by the main compounds (thymol and carvacrol), indicated programmed cell death mechanism [ 27 ].…”

Section: Introductionmentioning

confidence: 99%

“…According to previous reports, the antimicrobial activity is probably influenced by the main compounds (thymol and carvacrol), indicated programmed cell death mechanism [ 27 ]. Besides the main compounds, other minor compounds ( α - and γ -terpinene) were identified as free radical scavengers or lipid-peroxidation inhibitors [ 18 ]. Based on these results and the traditional application thyme oil is frequently used in the treatment of respiratory diseases [ 28 ].…”

Section: Introductionmentioning

confidence: 99%

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Flowering phenophases influence the antibacterial and anti-biofilm effects of Thymus vulgaris L. essential oil

Bakó

Balázs

Kerekes

et al. 2023

BMC Complement Med Ther

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Background Essential oils are becoming increasingly popular in medicinal applications because of their antimicrobial effect. Thymus vulgaris L. (Lamiaceae) is a well-known and widely cultivated medicinal plant, which is used as a remedy for cold, cough and gastrointestinal symptoms. Essential oil content of thyme is responsible for its antimicrobial activity, however, it has been reported that the chemical composition of essential oils influences its biological activity. In order to explore flowering phenophases influence on the chemical composition of thyme essential oil and its antibacterial and anti-biofilm activity, plant materials were collected at the beginning of flowering, in full bloom and at the end of flowering periods in 2019. Methods Essential oils from fresh and dried plant materials were distilled and analyzed with gas chromatography-mass spectrometry (GC-MS) and gas chromatography-flame ionization detection (GC-FID). The antibacterial activity was performed by broth microdilution and thin layer chromatography-direct bioautography (TLC-DB) assays and the anti-biofilm effect by crystal violet assay, respectively. Scanning electron microscopy was applied to illustrate the cellular changes of bacterial cells after essential oil treatment. Results Thymol (52.33–62.46%) was the main component in the thyme essential oils. Thyme oil distilled from fresh plant material and collected at the beginning of flowering period exerted the highest antibacterial and anti-biofilm activity against Haemophilus influenzae, H. parainfluenzae and Pseudomonas aeruginosa. Conclusion The different flowering periods of Thymus vulgaris influence the antibacterial and anti-biofilm activity of its essential oils, therefore, the collection time has to be taken into consideration and not only the full bloom, but the beginning of flowering period may provide biological active thyme essential oil.

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“…Moreover, the high number of hybrids of this genus make it difficult to determine of cultivars to the correct species. Several cultivars, such as Carvalia, De Dolj, Krajovy, Linalia, RH‐1, RH‐2, Sloneczko, Thymlia, Varico 1, Varico 2, and Varico 3 have been introduced by many countries [18,19] . The demand for high amount of thymol content led to the emergence of a new hybrid, T. vulgaris L. Varico 3.…”

Section: Introductionmentioning

confidence: 99%

Variation in Phytochemical, Morphological, and Ploidy Levels of Iranian Thymus Species

Tohidi

Rahimmalek

Arzani

2021

Chemistry & Biodiversity

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Thymus is one of the most important genera of the Lamiaceae family. This work was performed to assess inter and intra species variation, which is an indispensable prerequisite for the selection and the exploitation of the germplasm, using yield, secondary metabolites, and ploidy level criteria. Nineteen Iranian populations belonging to 11 Thymus species which includes T. vulgaris were used in this study. The results of cytological observations on the 19 populations revealed the three root‐tip chromosome numbers of 2n=2x=30, 2n=4x=56 or 60 (diploid and tetraploid). This study also presents the results of a two‐year field experiment that evaluates the agronomic and morphology of the 19 populations of Thymus spp. Cluster analysis grouped the populations into six groups and explained the relationships among ploidy levels, morphological traits, and essential oils (EOs). In general, diploid species belonged to the thymol chemotype, whilst carvacrol chemotype consistently dependent on the gene‐dosage effect. Thymus migricus, T. daenensis‐2, T. serpyllum, and T. trautvetteri populations with diverse thymol background were the best selection as the parents to improve thymol in a breeding program. Moreover, dry and fresh weight criteria can be used to improve EO content in thyme. Achieving this goal would be expected by crossing T. migricus and T. daenensis‐2. Finally, providing relevant information on the ploidy level of Thymus species, with emphasis on morphology and EO components variations, may be recommended for the selection of populations or species to improve bioactive components as well as morphological traits in future breeding programs.

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Effects of different factors influencing the essential oil properties of Thymus vulgaris L.

Cited by 8 publications

References 61 publications

THE ESSENTIAL OIL EXTRACTED FROM Thymus kotschyanus BOISS. & HOHEN AS A NATURAL SUBSTANCE FOR MANAGEMENT OF THE LESSER GRAIN BORER, Rhyzopertha dominica F.

THE ESSENTIAL OIL EXTRACTED FROM Thymus kotschyanus BOISS. & HOHEN AS A NATURAL SUBSTANCE FOR MANAGEMENT OF THE LESSER GRAIN BORER, Rhyzopertha dominica F.

Flowering phenophases influence the antibacterial and anti-biofilm effects of Thymus vulgaris L. essential oil

Variation in Phytochemical, Morphological, and Ploidy Levels of Iranian Thymus Species

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