Güncel Gönderiler: Bitki, İlaç ve Bilimsel Araştırmalar Merkezi
Toplam kayıt 330, listelenen: 161-180
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Composition of the essential oils of Viscum album L. Subspecies from Turkey
(2002)The extracts from three Viscum album subspecies obtained by Simultaneous Distillation-Extraction (SDE) using Likens-Nickerson apparatus, were analyzed by GC/MS. 34 compounds representing 89.2% of the essential oil V.album ... -
The essential oil of Anthemis cretica L. subsp. leucanthemoides (Boiss.) Grierson
(2002)Water distilled essential oil of Anthemis cretica L. var. leucanthemoides (Boiss.) Grierson was analyzed by GC/MS. Ninety nine compounds were characterized representing 87.7% of the oil. Enantiomeric distribution of the ... -
Determination of pK(a) values of some hydroxylated benzoic acids in methanol-water binary mixtures by LC methodology and potentiometry
(Elsevier Science BV, 2007)An accurate estimation of pK(a) values in methanol-water binary mixtures is very important for several separation techniques such as liquid chromatography and capillary electrophoresis that use these solvent mixtures. In ... -
Osmitopsis asteriscoides (Asteraceae) - the antimicrobial activity and essential oil composition of a Cape-Dutch remedy
(Elsevier Ireland LTD, 2003)The essential oil composition and antimicrobial activity of Osmitopsis asteriscoides, a medicinal plant used in traditional herbal preparations in South Africa has been investigated. Three different antimicrobial methods ... -
Effect of water extract of Turkish propolis on tuberculosis infection in guinea-pigs
(Academic Press LTD Elsevier Science LTD, 2004)Mycobacterium tuberculosis (H37Rv)-infected guinea-pig model was used to investigate the effect of water extract of propolis (WEP). After subcutaneous inoculation of tubercle bacilli, each animal received oral WEP (n = 9), ... -
Isomers of palmitoleic acid in lipids and volatile substances from the fruits of Ziziphus jujuba
(Plenum Publ Corp, 1999)Fatty acid from the dried pulp of Ziziphus jujuba Mill. Contain 33 components with a chain length from 7 to 28 carbon atoms and approximately equal ratio of total saturated and unsaturated, mainly monoenic, acids; among ... -
Antifungal activities and essential oil constituents of some spices from Pakistan
(Chem Soc Pakistan, 2000)Hydrodistillation of Amomum subulatum, Cinnamomum verum, Coriandrum sativum, Cuminum cyminum, Elettaria cardamomum, Myristica fragrans (Mace), and Myristica fragrans (Nutmeg) purchased from local markets yielded essential ... -
An unusual pregnane derivative and dibenzylbutyrolactone lignans from Centaurea sclerolepis
(Polish Chemical Soc, 2006)… -
Supercritical CO2 extraction of flaxseed
(Amer Oil Chemists Soc A O C S Press, 2002)Extraction of flaxseed oil was performed with supercritical carbon dioxide (SC-CO2). To investigate the effects of pressure and temperature on the solubility of oil and oil yield, three isobaric (21, 35, and 55 MPa) and ... -
Coenzyme Q10 concentrations and antioxidant status in tissues of breast cancer patients
(Pergamon-Elsevier Science LTD, 2000)Objectives: An increasing amount of experimental and epidemiological evidence implicates the involvement of oxygen derived radicals in the pathogenesis of cancer development. Oxygen derived radicals are able to cause damage ... -
Essential oil composition of sea fennel (Crithmum maritimum) from Turkey
(Wiley-V C H Verlag GMBH, 2001)Constituents of essential oils of sea fennel (Crithmum maritimum L.) collected in different localities of Turkey in 1997 and 1998 have been identified by GC/MS. The effects of collection time and locality on the oil content ... -
Essential oils of some Boswellia spp., myrrh and opopanax
(Wiley, 2003)The essential oils obtained by hydrodistillation of resins of Boswellia neglecta, B. pirottae,B. rivae, Commiphora myrrha (myrrh) and C. guidottii (opopanax or scented myrrh) were analysed using GC-MS. alpha-Thujene (19.2%), ... -
An ent-kaurane from Sideritis huber-morathii
(Pergamon-Elsevier Science LTD, 1996)A new ent-kaurane diterpenoid, 3,7,18-triacetyl-foliol, was isolated from Sideritis huber-morathii, together with known diterpenes. Two known ent-kauranoids were found in S. caesarea. Copyright (C) 1996 Elsevier Science Ltd -
Alpha sepiolite: An old clay mineral a new dressing material
(H M P Communications, 2005)alpha-sepiolite is a natural clay mineral that has powerful adsorptive properties. Sepiolite alone or combined with collagen has been used in many in-vivo implantation studies. Although it is a well known odor adsorber as ... -
Selective separation of thorium using ion imprinted chitosan-phthalate particles via solid phase extraction
(Taylor & Francis Inc, 2006)We have studied a new method for the preparation of Th(IV)-imprinted chitosan-phthalate particles, which can considerably enhance the adsorption capacity and selectivity of thorium ions. In this study, chitosan-phthalate ... -
Composition of the essential oil of Helichrysum forsskahlii (Gmel) Hilliard et Burt
(Allured Publ Corp, 2005)The essential oil obtained by hydrodistillation of the aerial parts of Helichrysum forsskahlii, endemic to southern Saudi Arabia, was analyzed by GG/MS. Eighty-one compounds, representing more than 85.9% of the oil, were ... -
Antibacterial activity and chemical composition of Turkish propolis
(Verlag Z Naturforsch, 2001)The antibacterial activities of propolis samples have been examined in vitro, according to the principles accepted for the determination of a similar activity of antibiotics with the use of solid and liquid media. It has ... -
Chemical composition and biological activity of the essential oil of Perovskia atriplicifolia from Pakistan
(Taylor & Francis Inc, 2007)The current study describes the phytochemical profile, antimicrobial, mutagenic, and antimutagenic activity of Perovskia atriplicifolia Benth. essential oil, collected in Pakistan. The sample of essential oil was obtained ... -
Essential oil composition of three species of Achillea from Kazakhstan
(Consultants Bureau, 2001)The chemical composition of essential oils of Achillea millefolium L., A. nobilis L from Kazakhstan flora and A. grandiflora Bieb introduced in culture at the Karaganda Botanic garden were determined by GC/MS. The main ... -
The quantitative determination of some phenolic acids in Delphinium formosum by HPLC
(Marcel Dekker Inc, 1999)Some phenolic acids from the flowers of Delphinium formosum have been determined quantitatively by reversed-phase high-performance liquid chromatography with diode-array detection. A comparative study was performed by ...