Farmakognozi Anabilim Dalı by Institution Author "Öztürk, Nilgün"
Now showing items 1-20 of 36
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Anatomical and Palynological Studies of Three Salvia L. Species in and Around Eskisehir, Turkey
Gürcan, Hasibe; Erkara, Ismuhan Potoğlu; Öztürk, Nilgün (Bangladesh Botanical Soc, 2016)The anatomical and palynological features of three species Salvia cryptantha Montbret & Aucher ex Benth., S. candidissima Vahl subsp. occidentalis Hedge and S. forskahlei L. have been carried that show natural distribution ... -
Antioxidant activities of Molokhia (Corchorus olitorius L.) extracts
Öztürk, Nilgün; Savaroğlu, F. (2011)Corchorus olitorius L. (Molokhia) (Tiliaceae), collected from the Doganci, Güzelyurt, Northern Cyprus, infusion and extracts with different polarities have been studied for their polyphenolic contents and antioxidant ... -
Antioxidant Activity and Phenolic Acid Constituents of Chestnut (Castania Sativa Mill.) Honey and Propolis
Sarıkaya, Ali Osman; Ulusoy, Esra; Öztürk, Nilgün; Tunçel, Muzaffer; Kolayli, Sevgi (Wiley, 2009)This study describes the constituents of phenolic acids and antioxidant activities of chestnut (Castania sativa Mill.) honeys and propolis in Turkey. Antioxidant activity of the chestnut honeys and propolis were examined ... -
Antioxidant properties and phenolic composition of Sideritis species
Tunalıer, Zeynep; Koşar, Müberra; Öztürk, Nilgün; Başer, K. Hüsnü Can; Duman, Hayri; Kırımer, Neşe (Kluwer Academic/Plenum Publishers, 2004)The antioxidant properties and phenolic composition of 27 Sideritis species were studied. Plant samples were extracted with petroleum ether using a Soxhlet apparatus. The defatted plant materials were extracted with 70% ... -
Antiprotozoal assessment and phenolic acid profiling of five Fumaria (fumitory) species
Orhan, İlkay Erdoğan; Öztürk, Nilgün; Şener, Bilge (Elsevier Sci LTD, 2015)Objective: To explore some Fumaria species which were recorded to be traditionally used against malaria and other protozoal diseases. Methods: Consequently, in the current study. antiprotozoal effect of the ethanol extracts ... -
Assessment of Phenolic Acid Content and In Vitro Antiradical Characteristics of Hawthorn
Öztürk, Nilgün; Tunçel, Muzaffer (Mary Ann Liebert Inc, 2011)The infusions and extracts obtained from leaves with flowers, fruit peel, and seed from hawthorn (Crataegus monogyna Jacq., Family Rosaceae) were subjected to evaluation as potential sources of antioxidant phytochemicals ... -
Cell viability, anti-proliferation and antioxidant activities of Sideritis syriaca, Tanacetum argenteum sub sp. argenteum and Achillea aleppica subsp. zederbaueri on human breast cancer cell line (MCF-7)
Yumrutas, O.; Öztuzcu, S.; Pehlivan, M.; Öztürk, Nilgün; Eröz Poyraz, İlham; Iğci, Y. Z.; Arslan, A. (Open Science Publishers LLP Inc., 2015)The breast cancer is one of the most common types of cancer. Many scientists have focused on the treatment of this disease for a long time by studying anti-cancer activities of plant extracts as well as synthetics. Lamiaceae ... -
Chemical and biological analysis of the by-product obtained by processing Gentiana lutea L. and other herbs during production of bitter liqueurs
Mustafa, Ahmed M.; Maggi, Filippo; Öztürk, Nilgün; Öztürk, Yusuf; Sagratini, Gianni; Torregiani, Elisabetta; Caprioli, Giovanni (Elsevier Science BV, 2016)The exploitation of plant by products is particularly important for the industries that produce bitter liqueurs, being the subsequent disposal very expensive. In fact, these wastes can be considered a good source of bioactive ... -
Comparative studies on Turkish and Indian Centella asiatica (L.) Urban (gotu kola) samples for their enzyme inhibitory and antioxidant effects and phytochemical characterization
Orhan, İlkay Erdoğan; Atasu, Erdem; Şenol, Fatma Sezer; Öztürk, Nilgün; Demirci, Betül; Daş, Kuntal; Şekeroğlu, Nazim (Elsevier Science BV, 2013)In this study, enzyme inhibitory and antioxidant activity of the ethanol extracts of Centella asiatica (L.) Urban from Turkey and India was examined and the results were compared to those of the standardized extract of the ... -
Cytotoxic and apoptotic effects of pomegranate peel extract on MCF-7 breast cancer cells
Dikmen, Miriş; Öztürk, Nilgün; Öztürk, Yusuf (Taylor & Francis LTD, 2009)… -
Determination of in vitro antioxidant activities and phenolic compounds of different extracts of salvia verticillata ssp. verticillata and spp. amasiaca from Turke'ys flora
Yumrutas, O.; Sökmen, A.; Öztürk, Nilgün (2011)This study was designed to evaluate the in vitro antioxidant activities of hexane, dichloromethane and methanol extracts of Salvia verticillata ssp. verticillata and spp. amasiaca. The samples were subjected to screening ... -
Determination of phenolic acids by a modified HPLC: Its application to various plant materials
Öztürk, Nilgün; Tuncel, M.; Tuncel, N. B. (Taylor & Francis Inc, 2007)The determination of certain phenolic acids employing a gradient HPLC method is described, in this study. The analysis was performed by using a gradient program with the two solvents system (A: methanol:water:formic acid ... -
Effects of extracts from certain Sideritis species on swimming performance in mice
Öztürk, Yusuf; Aydın, Süleyman; Öztürk, Nilgün; Başer, K. Hüsnü Can (John Wiley & Sons LTD, 1996)Extracts obtained from S. libanotica ssp. kurdica, S. lanata, S. perfoliata and S. athoa on mouse swimming performance were investigated using two different doses. In order to compare their effects on the swimming experiments, ... -
Effects of gentiopicroside, sweroside and swertiamarine, secoiridoids from gentian (Gentiana lutea ssp symphyandra), on cultured chicken embryonic fibroblasts
Öztürk, Nilgün; Korkmaz, Seval; Öztürk, Yusuf; Başer, K. Hüsnü Can (Georg Thieme Verlag Kg, 2006)Wound healing properties of Gentian (Gentiana lutea ssp. symphyandra) extract and its main constituents, gentiopicroside, sweroside and swertiamarine (compounds 1-3, respectively) were evaluated by comparison with dexpanthenol ... -
The effects of infrared and hot air drying on some properties of corn (Zea mays)
Tuncel, N. Barış; Yılmaz, Neşe; Kocabiyik, Habib; Öztürk, Nilgün; Tunçel, Muzaffer (Wfl Publ, 2010)Due to being one of the most important dietary staple foods in the world, corn (Zea mays) has gained considerable attention. Drying is an essential procedure for safe storage of corn. The objectives of the present study ... -
Enzyme inhibitory and antioxidant activity of Melia azedarach L. naturalized in Anatolia and its phenolic acid and fatty acid composition
Orhan, İlkay Erdoğan; Güner, E.; Öztürk, Nilgün; Şenol, Fatma Sezer; Erdem, S. Aslan; Kartal, M.; Şener, B. (Elsevier Science BV, 2012)In the present study, acetylcholinesterase (AChE), butyrylcholinesterase (BChE), and tyrosinase inhibitory and antioxidant activities of the fruit and leaf extracts of Melia azedarach L (Meliaceae) of Turkish origin were ... -
Evaluation of antioxidant activity of Vitex agnus-castus extracts
Öztürk, Nilgün; Bozan, Berrin; Bektaş, Nurcan (Wiley-Blackwell, 2004)…