WoS İndeksli Yayınlar Koleksiyonu by Institution Author "Koşar, Müberra"
Now showing items 21-40 of 41
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Endothelium-Dependent and Independent Effects of Garlic on Rat Aorta
Öztürk, Yusuf; Aydın, Süleyman; Koşar, Müberra; Başer, K. Hüsnü Can (Elsevier Sci Ireland LTD, 1994)Effects of garlic on isolated rat aorta were investigated by comparing with those of acetylcholine and L-arginine in the presence and absence of endothelium. For this purpose, certain linear and non-linear regression models ... -
The Essential Oil Composition of Dictamnus-Albus From Turkey
Başer, K. Hüsnü Can; Koşar, Müberra; Malyer, Hulusi; Özek, Temel (Georg Thieme Verlag, 1994)… -
An improved HPLC post-column methodology for the identification of free radical scavenging phytochemicals in complex mixtures
Koşar, Müberra; Dorman, D; Başer, K. Hüsnü Can; Hiltunen, Raimo (Springer Heidelberg, 2004)The importance of natural antioxidants principally relates to their health-promoting properties. The discovery of new sources of established compounds or more potent compounds is a costly exercise and any technique capable ... -
An improved on-line HPLC-DPPH* method for the screening of free radical scavenging compounds in water extracts of Lamiaceae plants
Koşar, Müberra; Dorman, HJD; Bachmayer, O; Başer, K. Hüsnü Can; Hiltunen, R (Consultants Bureau, 2003)An on-line HPLC-1,1-diphenyl-2-picrylhydrazyl (DPPH*) method has been improved for the detection of polar and nonpolar radical scavenging compounds from complex plant extracts. Eight water extracts were prepared from ... -
In vitro antioxidant properties and phenolic composition of Salvia halophila Hedge from Turkey
Koşar, Müberra; Göğer, Fatih; Başer, K. Hüsnü Can (Elsevier Sci LTD, 2011)An endemic plant of Turkey Salvia halophila Hedge (Lamiaceae) was examined for its antioxidant activity and phenolic compositions. The aerial part of S. halophila was extracted with different solvents in an order of ... -
In vitro antioxidant properties and phenolic composition of Salvia virgata Jacq. from Turkey
Koşar, Müberra; Göğer, Fatih; Başer, K. Hüsnü Can (American Chemical Society, 2008)Antioxidant activities and phenolic compositions of the active fractions of Salvia virgata Jacq. (Lamiaceae) from Turkey were examined. The aerial part of S. virgata was extracted with different solvents in an order of ... -
Iron(III) reducing and antiradical activities of three Sideritis from Turkey
Dorman, H. J. Damien; Koşar, Müberra; Başer, K. Hüsnü Can; Hiltunen, Raimo (Informa Healthcare, 2011)Objective: The antiradical activities of the various solvent extracts of Sideritis species are investigated here for the first time. Materials and methods: Plant samples were sequentially extracted with n-hexane, ... -
Is there an association of plasma homocysteine levels with vascular involvement in patients with Behcet's syndrome
Korkmaz, C; Bozan, Berrin; Koşar, Müberra; Şahin, F; gülbas, Z (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 ... -
Phenolic composition and biological activities of Salvia halophila and Salvia virgata from Turkey
Akkol, Esra Küpeli; Göğer, Fatih; Koşar, Müberra; Başer, K. Hüsnü Can (Elsevier Sci LTD, 2008)The aerial parts of Salvia halophila and Salvia virgata were subjected to Soxhlet extraction with different solvents such as n-hexane, ethyl acetate, methanol, and aqueous methanol (50%). Plants were also extracted with ... -
Phenolic composition of strawberry genotypes at different maturation stages
Koşar, Müberra; Kafkas, E; Paydaş, S; Başer, K. Hüsnü Can (American Chemical Society, 2004)The effects of maturation (green, pink, and ripe) on phenolic composition of strawberry cultivars Camarosa, Dorit, Chandler, and Osmanli and their hybrids were investigated using a high-pressure liquid chromatography (HPLC) ... -
Phenolic Profile and Antioxidant Evaluation of Mentha x piperita L., (Peppermint) Extracts
Dorman, H. J. Damien; Koşar, Müberra; Başer, K. Hüsnü Can; Hiltunen, Raimo (Natural Products Inc, 2009)Seven extracts were prepared from Mentha x piperita (peppermint) leaves in sequence using a Soxhlet apparatus, viz. (40-60 degrees) light petroleum (PE), dichloromethane (CH(2)Cl(2)), acetonitrile (ACN), ethyl acetate ... -
Quality characteristics of strawberry genotypes at different maturation stages
Kafkas, E.; Koşar, Müberra; Paydaş, S.; Kafkas, S.; Başer, K. Hüsnü Can (Elsevier Sci LTD, 2007)The chemical composition and quality characteristics of nine promising hybrids and two varieties ("Osmanli" and "Camarosa") of strawberries were evaluated for their quality attributes during ripening. Main soluble sugars, ... -
Quantitative Determination of Gallic acid and Cyanidin-3-O-Glucoside within Sumac Extracts by HPLC-MS/MS
Koşar, Müberra; Göğer, Fatih; Kırımer, Neşe; Başer, K. Hüsnü Can (Georg Thieme Verlag Kg, 2011)… -
Salvia officinalis L.: Composition and Antioxidant-related Activities of a Crude Extract and Selected Sub-fractions
Koşar, Müberra; Dorman, H. J. Damien; Başer, K. Hüsnü Can; Hiltunen, Raimo (Natural Products Inc, 2010)The composition and antioxidant properties of a methanol: acetic acid (99:1, v/v) soluble crude extract isolated from S. officinalis L. leaves through maceration and selected fractions isolated thereof are presented in ... -
Screening of free radical scavenging compounds in water extracts of Mentha samples using a postcolumn derivatization method
Koşar, Müberra; Dorman, HJD; Başer, K. Hüsnü Can; Hiltunen, Raimo (American Chemical Society, 2004)An on-line high-performance liquid chromatography-1,1-diphenyl-2-picrylhydrazyl (HPLC-DPPH.,) method has been improved for the detection of polar and nonpolar radical scavenging compounds in complex plant extracts. Nine ... -
A simple method to obtain essential oils from Salvia triloba L. and Laurus nobilis L. by using microwave-assisted hydrodistillation
Koşar, Müberra; Tunalıer, Zeynep; Özek, Temel; Kürkçüoğlu, Mine; Başer, K. Hüsnü Can (Verlag Z Naturforsch, 2005)A microwave-assisted hydrodistillation protocol was modified to extract essential oils from leaves of Salvia triloba L. and Laurus nobilis L. The essential oils of these plants are generally obtained by hydrodistillation ... -
Synthesis, crystal structure and biological activity of 1-(1H-benzoimidazol-2-yl)-ethanone thiosemicarbazone and its cobalt complex
Poyraz, Mehmet; Sarı, Musa; Demirci, Fatih; Koşar, Müberra; Demirayak, Şeref; Büyükgüngör, Orhan (Pergamon-Elsevier Science LTD, 2008)1-(1H-Benzoimidazol-2-yl)-ethanone thiosemicarbazone (H2L) (1) was obtained by the condensation reaction of 2-acetylbenzimidazole, thiosemicarbazide and acetic acid in ethanol. The novel cobalt(III) complex [Co(L)(HL)] 2 ...