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Side 1 fra 16 resultater
Fungitoxic activity of 12 essential oils against four postharvest citrus pathogens: chemical analysis of thymus capitatus oil and its effect in subatmospheric pressure conditions.
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The fungitoxic activity against Penicillium digitatum, Penicillium italicum, Botrytis cinerea, and Alternaria citri of 12 essential oils (EOs) distilled from medicinal plants is reported. The results of the in vitro trials show strong fungitoxic activity of Thymus capitatus (L.) Hofmgg EOs, which
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
Content and composition of the essential oil of Thymus serpyllum L. growing wild in Estonia.
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OBJECTIVE
The aim of this work was to analyze the essential oil content and its composition in the drug (Serpylli herba) of wild thyme (Thymus serpyllum L.) originating from 20 different natural places of growth in Estonia.
METHODS
The quantitative content of essential oil was determined according
An evaluation of the allelopathic potential of selected perennial groundcovers: foliar volatiles of catmint (Nepeta x faassenii) inhibit seedling growth.
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Six perennial groundcovers including Alchemilla mollis, Nepeta x faassenii, Phlox subulata, Sedum acre, Solidago cutleri, and Thymus praecox were investigated for the allelopathic potential of their respective foliar tissues via evaluation of volatile constituents produced by foliage. These
Relation between chemical composition or antioxidant activity and antihypertensive activity for six essential oils.
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Six essential oils (EOs), Juniperus phoenicea (leaves and berries), Thymus capitatus, Lauris nobilis, Melaleuca armillaris, and Eucalyptus gracilis, were screened for their antioxidant and antihypertensive activity as well as their chemical compositions. We identified and quantified 24 compounds
Molecular cloning and functional characterization of a monoterpene synthase isolated from the aromatic wild shrub Thymus albicans.
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The essential oil of Thymus albicans Hoffmanns. & Link, a native shrub from the Iberian Peninsula, is mainly composed of monoterpenes. In this study, a 1,8-cineole synthase was isolated from the 1,8-cineole chemotype. A partial sequence that lacked the complete plastid transit peptide but contained
In vitro antimicrobial and antioxidant activity of black thyme (Thymbra spicata L.) essential oils.
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In order to study antimicrobial effects of essential oils of Wild Thyme (Thymbra spicata L.) on two Gram positive bacteria (Streptococcus agalactiae RJTTC1978 and Staphylococcus aureus RJTTC1885) and two Gram negative bacteria (Escherichia coli RJTTC2409 and Klebsiella pneumoniae RJTTC1097), the
Phytochemical analysis of the essential oil of Thymus serpyllum L. growing wild in Estonia.
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Variations in the essential oil composition of Thymus serpyllum L., growing wild in Estonia (33 samples) and in some other countries (Russia, Latvia and Armenia, seven samples) were determined. The oil were obtained from Estonia (46 samples) in yields 0.6-4.4 and 1.9-8.2 mL kg(-1) in other
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
Nematicidal and Propagation Activities of Thyme Red and White Oil Compounds toward Bursaphelenchus xylophilus (Nematoda: Parasitaphelenchidae).
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The toxic and propagation effects on Bursaphelenchus xylophilus of 28 Thymus vulgaris red oil and white oil compounds were examined using direct contact and cotton ball bioassays. Results were compared with those of the trunk-injection nematicides emmamectin benzoate, levamisol hydrochloride and
Purification and characterization of the monoterpene cyclase gamma-terpinene synthase from Thymus vulgaris.
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The monoterpene cyclase, gamma-terpinene synthase, from Thymus vulgaris (thyme) leaves was purified to apparent homogeneity by isoelectric focusing and dye-ligand, anion-exchange, hydrophobic interaction, and gel permeation chromatography. The enzyme has a native molecular weight of 96,000 as
Rapid Evaluation of Plant Extracts and Essential Oils for Antifungal Activity Against Botrytis cinerea.
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A rapid assay to determine antifungal activity in plant extracts and essential oils is described. Wells in microtiter plates were loaded with Botrytis cinerea spores and plant extracts or essential oils. Subsequent changes in optical density following spore germination in the wells was measured
Nematicidal activity of essential oils and volatiles derived from Portuguese aromatic flora against the pinewood nematode, Bursaphelenchus xylophilus.
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Twenty seven essential oils, isolated from plants representing 11 families of Portuguese flora, were screened for their nematicidal activity against the pinewood nematode (PWN), Bursaphelenchus xylophilus. The essential oils were isolated by hydrodistillation and the volatiles by
Bacterial susceptibility to and chemical composition of essential oils from Thymus kotschyanus and Thymus persicus.
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Susceptibility of Escherichia coli, Staphylococcus aureus, Bacillus subtilis, Klebsiella pneumonia, and Pseudomonas aeroginosa to the essential oils extracted from two varieties of Thyme, i.e., Thymus kotschyanus Boiss. and Hohen. and Thymus persicus L. at preflowering and flowering stages were
Antioxidant properties of Thymus vulgaris oil against aflatoxin-induce oxidative stress in male rats.
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The leafy parts of thyme and its essential oil have been used in foods for the flavor, aroma and preservation and also in folk medicines. The aim of the current study was to determine the components of Thymus vulgaris L essential oil and to evaluate the protective effects of this oil against
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