Makale Koleksiyonu: Recent submissions
Now showing items 101-120 of 488
-
Analysis of the volatile components of five Turkish Rhododendron species by headspace solid-phase microextraction and GC-MS (HS-SPME-GC-MS)
(Walter De Gruyter GMBH, 2003)Volatile constituents of various solvent extracts (n-hexane, CH2C2, H2O) of 15 different organs (leaves, flowers, fruits) of five Rhododendron species (Ericaceae) growing in Turkey were trapped with headspace solid-phase ... -
The in vitro pharmacological activities and a chemical investigation of three South African Salvia species
(Elsevier Ireland LTD, 2005)Salvia species (sage) are well known in folk medicine throughout the world. In South Africa sage is used against fever and digestive disorders. Three closely related South African species (Salvia stenophylla, Salvia repens ... -
In vitro biological activity and essential oil composition of four indigenous South African Helichrysum species
(Elsevier Sci Ireland LTD, 2004)Helichrysum species are used widely to treat various medical conditions. In this study, the anti-microbial, anti-oxidant (DPPH assay) and anti-inflammatory activity (5-lipoxygenase assay) of Helichrysum dasyanthum, Helichrysum ... -
Kaurane diterpenoids from three Sideritis species
(Scientific Technical Research Council Turkey-Tubitak, 2005)Some kaurane diterpenoids were isolated from 3 species of the genus Sideritis (Lamiaceae) growing in the Eastern Mediterranean region. Sideritis libanotica subsp. libanotica contained siderol 2 and sideridiol 3. Sideritis ... -
The composition, geographical variation and antimicrobial activity of Lippia javanica (Verbenaceae) leaf essential oils
(Elsevier Sci Ireland LTD, 2005)Lippia javanica is widely distributed throughout South Africa where it is used extensively in traditional herbal preparations. An infusion of the leaves is commonly used as a decongestant for colds and coughs. A preliminary ... -
Gas chromatographic-mass spectrometric analysis of essential oils from Pimpinella species gathered from Central and Northern Turkey
(Elsevier Science BV, 2006)Essential oils from 15 Pimpinella species were analyzed by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS) techniques. One species, Pimpinella anisum, in which only fruits were evaluated, was also ... -
Chemical composition and antifungal activity of Arnica longifolia, Aster hesperius, and Chrysothamnus nauseosus essential oils
(American Chemical Society, 2007)Essential oils from three different Asteraceae obtained by hydrodistillation of aerial parts were analyzed by gas chromatography (GC) and gas chromatography-mass spectrometry (GC/MS). Main compounds obtained from each taxon ... -
Chemical composition and antifungal activity of Salvia macrochlamys and Salvia recognita essential oils
(American Chemical Society, 2006)Essential oils of Salvia macrochlamys and Salvia recognita were obtained by hydrodistillation of dried aerial parts and characterized by gas chromatography and gas chromatography-mass spectrometry. One hundred and twenty ... -
Insecticidal activity of 23 essential oils and their major compounds against adult Lipaphis pseudobrassicae (Davis) (Aphididae : Homoptera)
(Wiley, 2005)Essential oils from 23 species of plants comprising 14 genera and 4 plant families were obtained by Clevenger-type water distillation. The major compounds in these essential oils were identified with GC-MS and their ... -
Characterization of volatile constituents of Scaligeria tripartita and studies on the antifungal activity against phytopathogenic fungi
(Elsevier Science BV, 2007)The chemical composition of the essential oils obtained from stems and leaves, fruits and roots of Scaligeria tripartita oil was analyzed by gas chromatography-mass spectrometry. A total of 38 compounds were identified ... -
Analysis of the volatile constituents of Asian Hypericum L. (Clusiaceae, Hyperidoideae) species
(Allured Publ Corp, 2005)Of the 57 species of the economically important genus Hypericum (St. John's Wort; Clusiaceae) occurring in China, only a small percentage have been previously phytochemically investigated. As part of our continuing research ... -
Estrogenic activity of isolated compounds and essential oils of Pimpinella species from turkey, evaluated using a recombinant yeast screen
(Georg Thieme Verlag Kg, 2004)Several plants and plant-derived pure compounds, designated as phytoestrogens, have been reported to cause estrogenic effects. They have been used for alleviation of menopausal symptoms, prevention of osteoporosis, heart ... -
Bioactive constituents from Turkish Pimpinella species
(Wiley-V C H Verlag GMBH, 2005)A new 'phenylpropanoid', 4-(3-methyloxiran-2-yl)phenyl 2-methylbutanoate (1), a new trinorsesquiterpene, 4-(6-methylbicyclo[4.1.0]hept-2-en-7-yl)butan-2-one (2), and eight known compounds (3-10) were isolated from the ... -
Antimicrobial compounds from Pimpinella species growing in Turkey
(Georg Thieme Verlag Kg, 2003)A new, 4-(2-propenyl)-phenyl angelate (1) and four known phenylpropanoids (2-5), were isolated from Pimpinella isaurica, a species endemic in Turkey. One new sesquiterpene, 1-methyl-4-(5-methyl-1-methylenehex-4-enyl)-7-o ... -
Effect of essential oils and isolated compounds from Pimpinella species on NF-kappa B: A target for antiinflammatory therapy
(John Wiley & Sons LTD, 2007)Pimpinella essential oils and isolated compounds were screened for their inhibitory activity against NF-kappa B mediated transcription in SW1353 cells. Twelve oils were effective in inhibiting NF-kappa B mediated transcription. ... -
Triterpenoid saponins from Bongardia chrysogonum
(American Chemical Society, 2000)Two new triterpenoid saponins, 3-O-[beta-D-glucopyranosyl-(1-->4)-beta-D-glucopyranosyl-(1-->4)-alpha-L-arabino-pyranosyl]-hederagenin (1) and 3-O-[beta-D-glucopyranosyl-(1-->4)-beta-D-glucopyransy(1-->4)-alpha-L-arabino ... -
New alkaloids from Bongardia chrysogonum
(Taylor & Francis LTD, 1998)Two new alkaloids, 17-desoxy-cis-lamprolobine (1) and bonzakaline (2), along with the known alkaloids lupanine (3) and palmatrubine (4), have been isolated from the ethanolic extracts of Bongardia chrysogonum. Compounds 1 ... -
Alkaloids of Bongardia chrysogonum
(Pergamon-Elsevier Science LTD, 1999)Two new pyridine alkaloids were isolated from the tubers of Bongardia chrysogonum, together with a new lupine alkaloid. The structures of the new alkaloids were characterized by spectroscopic analysis and the stereochemistry ... -
Effect of an acid treatment on the phytochemical and antioxidant characteristics of extracts from selected Lamiaceae species
(Elsevier Sci LTD, 2005)Aqueous-methanol extracts were prepared from basil (Ocimum basilicum L.), bay (Laurus nobilis L.), oregano (Origanum vulgare L.), rosemary (Rosmarinus officinalis L.), sage (Salvia officinalis L.), savory (Satureja hortensis ... -
Chemical composition and in vitro antioxidant evaluation of a water-soluble Moldavian balm (Dracocephalum moldavica L.) extract
(Elsevier Science BV, 2007)The chemical composition and antioxidant properties of a water-soluble extract of Moldavian balm (Dracocephalum moldavica L., syn. Moldavian dragonhead) prepared by hydrodistillation are presented in this study. The total ...
