Geographical and environment-related variations of essential oils in isolated populations of Thymus richardii Pers. in the Mediterranean basin

Llorens, Leonardo; Molina, Juan Antonio Llorens; Agnello, S.; Boira, Herminio

doi:10.1016/j.bse.2014.05.007

Cited by 31 publications

(19 citation statements)

References 25 publications

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“…While, α ‐humulene and β ‐caryophyllene were the major sesquiterpene hydrocarbons, β ‐cedrene epoxide and α ‐bisabolol were identified as the main oxygenated sesquiterpenes ( Table ). Literature survey on studies related to the EOs obtained from the plants belonging to Lamiaceae family, showed high variability in their chemical composition depending on genetic, location, and stages of plant development …”

Section: Resultsmentioning

confidence: 99%

Genetic and Chemical Diversity in Perovskia abrotanoides Kar. (Lamiaceae) Populations Based on ISSRs Markers and Essential Oils Profile

Pourhosseini

Hadian

Sonboli³

et al. 2018

Chemistry & Biodiversity

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Genetic and the essential oil composition variability among twelve Perovskia abrotanoides populations (PAbPs) growing wild in Iran were assessed by ISSR markers, GC-FID and GC/MS, respectively. Nine selected ISSR primers produced 119 discernible bands, of them 96 (80.7%) being polymorphic. Genetic similarity values among populations ranged between 0.07 and 0.79 which indicated a high level of genetic variation. Polymorphic information content, resolving power and marker index generated by ISSR primers were, 0.31, 6.14, and 3.32, respectively. UPGMA grouped PAbPs into four main clusters. Altogether, 38 chemical compounds were identified in the oils, and a relatively high variation in their contents was found. Camphor (11.9 - 27.5%), 1,8-cineole (11.3 - 21.3%), α-bisabolol (0.0 - 13.1%), α-pinene (5.9 - 10.8%), and δ-3-carene (0.1 - 10.5%) were the major compounds. Oxygenated monoterpenes (32.1 - 35.8%) and monoterpene hydrocarbons (25.7 - 30.4%) were the main groups of compounds in the oils studied. Cluster analysis and principal-component analysis were used to characterize the samples according to oil components. Four main chemotypes were found to be Chemotype I (camphor/1,8-cineol), Chemotype II (1,8-cineole/camphor), Chemotype III (camphor/1,8-cineol/α-bisabolol), and Chemotype IV (camphor/δ-3-carene/α-bisabolol). The information, provided here on P. abrotanoides populations, will be useful to introduce this plant into agricultural systems.

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Section: Resultsmentioning

confidence: 99%

Genetic and Chemical Diversity in Perovskia abrotanoides Kar. (Lamiaceae) Populations Based on ISSRs Markers and Essential Oils Profile

Pourhosseini

Hadian

Sonboli³

et al. 2018

Chemistry & Biodiversity

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“…This may be due to the fact that In Artemisia species, diverse monoterpene and sesquiterpene compounds are produced in the glandular trichomes present on leaf surfaces (Ruhland et al, 2013). Variations in the chemical composition of the essential oil of the same species from different regions may also be attributed to differences in climatic and geographic parameters such as temperature, altitude, wind direction, rainfall, and soil type (Douglas et al, 2004;Llorens et al, 2014). The chemical constituents other Artemisia species from India and Iran are summarized in Table 2.…”

Section: Resultsmentioning

confidence: 99%

Chemical composition and acetylcholinesterase inhibitory activity ofArtemisia maderaspatanaessential oil

Jyotshna¹,

Srivastava²,

Singh³

et al. 2015

Pharmaceutical Biology

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Context: To date, there are no reports to validate the Indian traditional and folklore claims of Artemisia maderaspatana L. (syn. Grangea maderaspatana L.) (Asteraceae) for the treatment of Alzheimer's disease. Objective: The present study characterizes the volatile components (non-polar compounds) of A. maderaspatana and evaluates its acetylcholinesterase inhibition potential. Materials and methods: The essential oils (yield 0.06% v/w) were obtained from fresh aerial part of A. maderaspatana. The characterization of volatile components (non-polar compounds) was performed by GC-MS data and with those of reference compounds compiled in the spectral library of in-house database. The in vitro acetylcholinesterase (AChE) inhibition of the volatile organic constituents (VOC's) of A. maderaspatana aerial part was evaluated in varying concentration ranges (0.70-44.75 mg/mL) with Ellman's method. Results: The major components were a-humulene (46.3%), b-caryophyllene (9.3%), a-copaene (8.2%), b-myrcene (4.3%), Z(E)-a-farnesene (3.7%), and calarene (3.5%). Chemical variability among other Artemisia spp. from different climatic regions of India and countries namely Iran and France was observed. The experimental results showed that diverse volatile organic constituents of A. maderaspatana have significant acetylcholinesterase inhibitory activity (an IC 50 value of 31.33 ± 1.03 mg/mL). This is the first report on the inhibition of acetylcholinesterase properties of essential oil of A. maderaspatana obtained from fresh aerial part. Conclusions: The present results indicate that essential oil of A. maderaspatana isolated from the northern region of India could inhibit AChE moderately. Therefore, the possibility of novel AChE inhibitors might exist in VOCs of this plant.

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“…Thymus species are very variable in the essential oil composition. The quantity of each compound is also variable and this is related to various environmental and genetic factors [2]. The four extracted oils contained 43, 12, 52 and 19 compounds in the EOs of…”

Section: Chemical Composition Of Eosmentioning

confidence: 99%

“… Thyme, a Lamiaceae aromatic plant, is a perennial medicinal species belonging to Europe, Africa and Asia including about approximately 110 species [1,2]. The different species are distributed along the cost and even in the intern and arid areas.…”

Section: Introductionmentioning

confidence: 99%

Phytochemical Characterization of the Essential Oils Obtained from Mediterranean Thymus spp. (Lamiacea) Harvested at Different Stages of Growth

Touhami¹,

Chefrour²,

Khellaf³

et al. 2017

JPP

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Abstract:To prove more information on the chemical composition of the essential oils of Thymus taxa collected in different Algeria areas, and to determine the effect of harvesting periods on the composition of these essential oils: three Thymus species (T. numidicus, T.ciliatus and T. algeriensis) were collected during two periods of development, the EOs (essential oils) obtained by steam distillation of the aerial parts were analyzed by GC/MS (gas chromatography coupled with mass spectrometry). During the pre-flowering stage, the RP% (relative percentage) of Eos varied between 1.00% and 1.34% for all the species. The content of EOs increased during the flowering stage and reached particularly 2.10% and 2.85% for T. numidicus (from Berrahal) and T. numidicus (from Tacha), respectively. GC/MS analysis showed that these oils are very rich in oxygenated monoterpenes group (76.96%~82.11%) when the plants were harvested during the flowering stage of growth. Thymol was the major compound in the EOs contained in T. numidicus (Berrahal) and T. ciliatus with more than 39% and 54%, respectively. Thymus numidicus (Tacha) and T. algeriensis EOs were characterized by high content in p-cimene-7-ol (78.06% and 26.98%, respectively). These two chemotypes (thymol and p-cimene-7-ol) are considered as antioxidant and antimicrobial agents providing the basis for many applications in processed food preservation and pharmaceutical products.

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Geographical and environment-related variations of essential oils in isolated populations of Thymus richardii Pers. in the Mediterranean basin

Cited by 31 publications

References 25 publications

Genetic and Chemical Diversity in Perovskia abrotanoides Kar. (Lamiaceae) Populations Based on ISSRs Markers and Essential Oils Profile

Genetic and Chemical Diversity in Perovskia abrotanoides Kar. (Lamiaceae) Populations Based on ISSRs Markers and Essential Oils Profile

Chemical composition and acetylcholinesterase inhibitory activity ofArtemisia maderaspatanaessential oil

Phytochemical Characterization of the Essential Oils Obtained from Mediterranean Thymus spp. (Lamiacea) Harvested at Different Stages of Growth

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