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Chemical composition, olfactory analysis and antibacterial activity of Thymus vulgaris chemotypes geraniol, 4-thujanol/terpinen-4-ol, thymol and linalool cultivated in southern France.

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The essential oils of four chemotypes of Thymus vulgaris L. (Lamiaceae) were analyzed for their composition and antibacterial activity to assess their different properties. GC-MS and GC-FID analyses revealed that the essentials oils can be classified into the chemotypes thymol (41.0% thymol),

The main citral-geraniol and carvacrol chemotypes of the essential oil of thymus pulegioides L. growing wild in vilnius district (Lithuania).

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Thymus pulegioides L. with lemon and carvacrol odor form the major part of plants growing wild in all 10 investigated localities during 1995-1997. The main components of the citral-geraniol chemotype of lemon-scented essential oil are the following (%): geraniol (14.9-30. 8), geranial (trans-citral,

Insecticidal Properties of Essential Oils and Some of Their Constituents on the Turkestan Cockroach (Blattodea: Blattidae).

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The Turkestan cockroach, Blatta lateralis (Walker), has become the most important peridomestic species in urban areas of the Southwestern United States. The aim of this study was to evaluate the use of botanical compounds to control this urban pest. We tested the acute toxicity and repellency of six

Screening of the antibacterial effects of a variety of essential oils on respiratory tract pathogens, using a modified dilution assay method.

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The purpose of this study was to examine the antibacterial effects of a wide variety of essential oils on major respiratory tract pathogens. The antibacterial activity of 14 essential oils and their major components was evaluated by agar-plate dilution assay under sealed conditions, with agar used

Volatile oil variability in Thymus serpylloides ssp. gadorensis growing wild in Southeastern Spain.

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Volatile oils from single plants of Thymus serpylloides ssp. gadorensis were collected from Southeastern Spain and studied to check for chemical variability using gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS). Many of the samples showed a phenolic chemotype, while another

[Systemic emulsions. 2. Use of different methods of formulation: the effect of essential oils of thyme on stability].

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As part of an ongoing investigation on emulsifying techniques, we studied the influence of different essential oils from Thymus vulgaris on emulsion stability. All four chimiotypes tested (geraniol, linalol, carvacrol, and thymol) caused a marked decrease in stability. This instability cannot be

Activation of the human transient receptor potential vanilloid subtype 1 by essential oils.

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Transient receptor potential vanilloid subtype 1 (TRPV1) is a non-selective cation channel activated by capsaicin. TRPV1 is expressed not only on human sensory neurons but also on human epidermal and hair follicle keratinocytes. Therefore, TRPV1 could have the potential to be a therapeutic target

Characterization of some Italian ornamental thyme by their aroma.

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The aromatic profiles of five commercial thyme cultivars (T. vulgaris 'Silver Poise', T. vulgaris 'Erectus', T. vulgaris 'Faustini', T. x citriodorus 'Anderson's Gold', and T. x citriodorus 'Silver Queen'), cultivated in Italy, were defined both by their static headspaces (HS) and essential oils

Essential oil polymorphism of wild growing Hungarian thyme (Thymus pannonicus) populations in the Carpathian Basin.

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The volatile oil compositions of Thymus pannonicus All. from nineteen different localities of Hungary were analyzed by GC/MS. The essential oil content of the Hungarian thyme samples varied between very low (0.14 mL/100 g DW) and fairly high (1.9 mL/100 g DW) values. Significant essential oil

Influence of some environmental factors on the essential oil variability of Thymus migricus.

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Essential oils of the air-dried aerial parts of five populations of Thymus migricus Klokov & Desj.-Shost. collected from northwest Iran were obtained by hydrodistillation with yield of 1.1 - 3.3% (w/w). The essential oils were analyzed by a combination of GC-FID and GC-MS techniques, to check for

Composition of essential oil of lemon thyme (Thymus × citriodorus) at different hydrodistillation times.

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Distillation time can both to optimise the production and to engineer the composition of essential oil in essential oil bearing plants. Purpose of this study was to evaluate the effect of duration of hydrodistillation on composition of essential oil of Thymus × citriodorus, the natural source of

Combined effect of heat, essential oils and salt on fungicidal activity against Trichophyton mentagrophytes in a foot bath.

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This work was originally undertaken to determine the effective conditions of essential oils against Trichophyton mentagrophytes in vitro for the treatment of tinea pedis in a foot bath. Agar blocks implanted with T. mentagrophytes were immersed in 0.1% aqueous agar containing two-fold dilutions of

The terpenes of leaves, pollen, and nectar of thyme (Thymus vulgaris) inhibit growth of bee disease-associated microbes.

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Honey bees are highly prone to infectious diseases, causing colony losses in the worst case. However, they combat diseases through a combination of their innate immune system and social defence behaviours like foraging for health-enhancing plant products (e.g. nectar, pollen and resin). Plant

Chemotaxonomic study on Thymus villosus from Portugal.

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The composition of the essential oils of four populations of Thymus villosus subsp. lusitanicus (Boiss.) Coutinho from Portugal was investigated by GC and GC-MS. To study the chemical polymorphism the results obtained from GC analyses of the volatile oils from individual plants from four populations

Survey of Thymus migricus essential oil on aflatoxin inhibition in Aspergillus flavus.

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Essential oil components as result of non host disease resistance of plants have high capability to introduce as alternative of chemical pesticides. Thymus migricus essential oil was selected to investigation of its antifungal activity on survival and growth of Aspergillus flavus. For obtain

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