Browsing by Author "Tepe, Bektas"
Now showing items 21-40 of 45
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Evaluation of metal concentration and antioxidant activity of three edible mushrooms from Mugla, Turkey
Sarikurkcu, Cengiz; Tepe, Bektas; Semiz, Deniz Karsli; Solak, M. Halil (PERGAMON-ELSEVIER SCIENCE LTD, 2010)This study is designed for the determination of metal concentrations, antioxidant activity potentials and total phenolics of Amanita caesarea, Clitocybe geotropa and Leucoagaricus pudicus. Concentrations of four heavy ... -
Evaluation of the antioxidant activity of four edible mushrooms from the Central Anatolia, Eskisehir-Turkey: Lactarius deterrimus, Suillus collitinus, Boletus edulis, Xerocomus chrysenteron
Sarikurkcu, Cengiz; Tepe, Bektas; Yamac, Mustafa (ELSEVIER SCI LTD, 2008)The methanolic extracts of Lactarills deterrimus, Suillus collitinus, Boletits edidis, Xcroconius chrysenteron were analyzed for their antioxidant activities in different test systems namely beta-carotene/linoleic acid, ... -
Evaluation of the Chemical Composition and Antioxidant Activity of the Essential Oils of Peucedanum longifolium (Waldst. & Kit.) and P. palimbioides (Boiss.)
Tepe, Bektas; Akpulat, H. Askin; Sokmen, Munevver (ACG PUBLICATIONS, 2011)This study was designed to evaluate the chemical composition and antioxidant activity of the essential oils of Peucedanum longifolium and P. palimbioides. According to the GC-MS analysis, 35 compounds were accounted for ... -
EVALUATION OF THE CHEMICAL COMPOSITION AND ANTIOXIDANT ACTIVITY OF THE PEEL OIL OF CITRUS NOBILIS
Gursoy, Nevcihan; Tepe, Bektas; Sokmen, Munevver (TAYLOR & FRANCIS INC, 2010)Peel oil of Citrus nobilis (Lour) was analyzed for determining its chemical composition. Fourteen identified components accounted for 99.1% (GC) and 100.0% (FID) of the total oil. Major component of the oil was limonene ... -
In vitro amoebicidal activities of Teucrium polium and T. chamaedrys on Acanthamoeba castellanii trophozoites and cysts
Tepe, Bektas; Malatyali, Erdogan; Degerli, Serpil; Berk, Seyda (SPRINGER, 2012)Amoebic keratitis is difficult to treat without total efficacy in some patients because of cysts, which are less susceptible than trophozoites to the usual treatments. The aim of this study is to evaluate the in vitro ... -
In vitro amoebicidal activity of four Peucedanum species on Acanthamoeba castellanii cysts and trophozoites
Malatyali, Erdogan; Tepe, Bektas; Degerli, Serpil; Berk, Seyda; Akpulat, H. Askin (SPRINGER, 2012)Amoebic keratitis is difficult to treat without total efficacy in some patients because of cysts, which is less susceptible than trophozoites to the usual treatments. The aim of this study is to evaluate the in vitro ... -
In vitro amoebicidal activity of Origanum syriacum and Origanum laevigatum on Acanthamoeba castellanii cysts and trophozoites
Degerli, Serpil; Tepe, Bektas; Celiksoz, Ali; Berk, Seyda; Malatyali, Erdogan (ACADEMIC PRESS INC ELSEVIER SCIENCE, 2012)In some patients, complete treatment of amoebic keratitis is difficult because of the resistance of cysts to therapeutic agents. The aim of this study was to evaluate the in vitro amoebicidal activity of methanolic extracts ... -
In Vitro Amoebicidal Activity of Salvia staminea and Salvia caespitosa on Acanthamoeba castellanii and Their Cytotoxic Potentials on Corneal Cells
Goze, Ismihan; Alim, Ahmet; Dag, Seker; Tepe, Bektas; Polat, Zubeyde Akin (MARY ANN LIEBERT, INC, 2009)Background/Aims: Amoebic keratitis is difficult to treat with total efficacy in some patients because of cysts, which are less susceptible than trophozoites to the usual treatments. We investigated the in vitro effectiveness ... -
In vitro antimicrobial and antiviral activities of the essential oil and various extracts of Salvia cedronella Boiss
Alim, Ahmet; Goze, Ismihan; Goze, Hamdi Murat; Tepe, Bektas (ACADEMIC JOURNALS, 2009)The essential oil and various extracts obtained from Salvia cedronella Boiss have been evaluated for their possible in vitro antimicrobial and antiviral capacities. The GC-EIMS analysis of the essential oil was resulted ... -
The in vitro antioxidative properties of the essential oils and methanol extracts of Satureja spicigera (K. Koch.) Boiss. and Satureja cuneifolia ten
Eminagaoglu, Ozgur; Tepe, Bektas; Yumrutas, Onder; Akpulat, H. Askin; Daferera, Dimitra; Polissiou, Moschos; Sokmen, Atalay (ELSEVIER SCI LTD, 2007)This study was designed to examine the in vitro antioxidant activities of the essential oil and methanol extracts of Satureja spicigera and S. cuneifolia from Turkish flora. GC and GC/MS analysis of the essential oils ... -
In vitro effectiveness of Thymus sipyleus subsp sipyleus var. sipyleus on Acanthamoeba castellanii and its cytotoxic potential on corneal cells
Polat, Zubeyde Akin; Tepe, Bektas; Vural, Ayse (SPRINGER, 2007)Acanthamoeba species are an important cause of microbial keratitis that may cause severe ocular inflammation and visual loss. Acanthamoeba keratitis is difficult to treat, without total efficacy in some patients because ... -
In vitro evaluation of the amoebicidal activity of garlic (Allium sativum) extract on Acanthamoeba castellanii and its cytotoxic potential on corneal cells
Polat, Zubeyde Akin; Vural, Ayse; Ozan, Fatih; Tepe, Bektas; Oezcelik, Semra; Cetin, Ali (MARY ANN LIEBERT, INC, 2008)Free-living protozoa of the genus Acanthamoeba can cause one of the most severe, potentially sight-threatening infections of the eye, the so-called A. keratitis. A. keratitis is difficult to treat because, under adverse ... -
Investigation of the antioxidant properties of Ferula orientalis L. using a suitable extraction procedure
Kartal, Nuket; Sokmen, Munevver; Tepe, Bektas; Daferera, Dimitra; Polissiou, Moschos; Sokmen, Atalay (ELSEVIER SCI LTD, 2007)The present work examines the in vitro antioxidant properties of the essential oil and various extracts prepared from the herbal parts of Ferula orientalis A. (Apiaceae). The highest 2,2-diphenyl-l-picrylhydrazyi (DPPH) ... -
Metal Concentrations of Wild Edible Mushrooms from Turkey
Sarikurkcu, Cengiz; Tepe, Bektas; Solak, Mehmet Halil; Cetinkaya, Serap (TAYLOR & FRANCIS INC, 2012)In the present study, the contents of Zn, Fe, Cu, Mn, Co, Ni, Pb, Cd, Cr, Al, Ca, Mg, and K in Agaricus campestris, Agrocybe cylindracea, Collybia dryophila, Helvella leucopus, Russula delica, Tricholoma auratum, Amanita ... -
Phenolic Acid Composition and Anti-Parasitic Effects of Four Peucedanum Species on Entamoeba histolytica Trophozoites
Degerli, Serpil; Tepe, Bektas (IRANIAN SCIENTIFIC SOCIETY MEDICAL ENTOMOLOGY, 2015)Background: The aim of this study was to determine phenolic acid composition and anti-parasitic effects of Peucedanum caucasicum, P. palimbioides, P. longibracteolatum and P. chryseum on Entamoeba histolytica. Methods: ... -
Phenolic acid contents, essential oil compositions and antioxidant activities of two varieties of Salvia euphratica from Turkey
Yumrutas, Onder; Sokmen, Atalay; Akpulat, H. Askin; Ozturk, Nilgun; Daferera, Dimitra; Sokmen, Munevver; Tepe, Bektas (TAYLOR & FRANCIS LTD, 2012)This study was designed to evaluate the in vitro antioxidant activities of n-hexane (Hex), dichloromethane (DCM), methanol (MeOH) and essential oils (EO) extracts obtained from Salvia euphratica var. euphratica and Salvia ... -
Production and optimisation of rosmarinic acid by Satureja hortensis L. callus cultures
Tepe, Bektas; Sokmen, Atalay (TAYLOR & FRANCIS LTD, 2007)In this study, production and optimisation of rosmarinic acid, a phenolic acid and an economically important metabolite, was investigated in the callus cultures established from the mature seeds of Satureja hortensis L. ... -
Screening of the antioxidant activity of essential oil and various extracts of Origanum rotundifolium Boiss. from Turkey
Goze, Ismihan; Alim, Ahmet; Tepe, Arzuhan Sihoglu; Sokmen, Munevver; Sevgi, Kemal; Tepe, Bektas (ACADEMIC JOURNALS, 2009)This study is designed to examine the chemical composition and in vitro antioxidant activity of the essential oil and various extracts of Origanum rotundifolium Boiss. from Turkey. The total of the 40 identified components ... -
Screening of the Antioxidant Activity of the Essential Oil and Methanol Extract of Mentha pulegium L. From Turkey
Sarikurkcu, Cengiz; Eryigit, Feryat; Cengiz, Mustafa; Tepe, Bektas; Cakir, Ahmet; Mete, Ebru (TAYLOR & FRANCIS INC, 2012)This study was designed to examine the chemical composition and antioxidant activity of the essential oil and methanol extract of Mentha pulegium. Gas chromatography (GC) and gas chromatography-mass spectroscopy (GC-MS) ... -
Screening of the antioxidant, antimicrobial and DNA damage protection potentials of the aqueous extract of Asplenium ceterach DC
Berk, Seyda; Tepe, Bektas; Arslan, Serdal; Sarikurkcu, Cengiz (ACADEMIC JOURNALS, 2011)In this study, in vitro antioxidant, antimicrobial and DNA damage protection potentials of the aqueous extract of Asplenium ceterach was firstly evaluated in addition to its total phenolic and flavonoid contents. Antioxidant ...