Güncel Gönderiler: Araştırma Merkezleri
Toplam kayıt 492, listelenen: 321-340
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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 ... -
Is there an association of plasma homocysteine levels with vascular involvement in patients with Behcet's syndrome
(Clinical & Exper Rheumatology, 2002)Objective. To assess whether or not plasma homocysteine levels play a part in vascular involvement in Behcet's syndrome (BS). Methods. 74 consecutive BS patients fulfilling the criteria of the International Study Group for ... -
Diversity and antifeedant activity of diterpenes from Turkish species of Sideritis
(Pergamon-Elsevier Science LTD, 2000)… -
Neo-clerodane diterpenoids from Teucrium sandrasicum
(Pergamon-Elsevier Science LTD, 1997)Six new neo-clerodane diterpenoids, teusandrins A-F, and two known compounds, teucjaponin B and its 6-O-acetyl derivative, were isolated from the aerial parts of Teucrium sandrasicum. The structures of the new diterpenoids ... -
Chemical composition of essential oils from leaves and twigs of Pistacia lentiscus, Pistacia lentiscus var. chia, and Pistacia terebinthus from Turkey
(Swets Zeitlinger Publishers, 2004)The composition of the essential oils from the leaves and twigs of Pistacia lentiscus L., Pistacia lentiscus var. chia (L.), and Pistacia terebinthus L. of Turkish origin were analyzed by gas chromatography/mass spectrometry ... -
Volatile compounds from Haplophyllum myrtifolium
(Consultants Bureau, 2001)The volatile fractions of the petroleum ether extract and of the alkaloid extract of Haplophyllum myrtifolium Boiss., endemic to Turkey, were trapped by using the Solid Phase Micro Extraction (SPME) technique and analyzed ... -
Composition of the essential oil of Haplophyllum myrtifolium
(Consultants Bureau, 2001)The chemical composition of the essential oil of Haplophyllum myrtifolium Boiss., endemic to Turkey, was examined by GC/MS. Ninety-seven compounds were characterized with linalool (12.8%), beta-caryophyllene (10.3 %), and ... -
Essential oil composition of Eucalyptus camaldulensis Dehn. from Mozambique
(Allured Publ Corp, 2000)Water-distilled oil from the dried leaves of two trees of Eucalyptus camaldulensis Dehn. of different ages, were analyzed by GC/MS. The principal constituent, in the 4-year-old tree oil and the 11-year-old tree oil, was ... -
Composition of the essential oil of Arbutus unedo
(Consultants Bureau, 2001)Water-distilled essential oil from leaves of Arbutus unedo L of Turkish origin was analyzed by GC/MS. Thirty-seven constituents were characterized with (E)-2-decenal (12.0 %), alpha- terpineol (8.8 %), hexadecanoic acid ...
