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Biologically active flavonoids from Dodonaea viscosa and their structure-activity relationships
Muhammad, Akhtar; Tel-Çayan, Gülsen; Öztürk, Mehmet; Nadeem, Said; Duru, Mehmet Emin; Anis, Itrat; Shah, Muhammad R. (Elsevier, 2015)Antioxidant and anticholinesterase activities of twelve flavonoids i.e. santin (1), penduletin (2), viscosine (3), 6,7-dimethylkaempferol (4), kaempferol-3- methylether (5), 3,4'-dimethoxy-5,7-dihydroxyflavone (6), ... -
Chemical characterization and antioxidant activity of Eryngium pseudothoriifolium and E. thorifolium essential oils
Tel-Çayan, Gülsen; Duru, Mehmet Emin (Marmara Univ, 2019)The chemical characterization and antioxidant activities of essential oils of Eryngium pseudothoriifolium Contandr. & Quezel and E. thorifolium Boiss., endemic plant species from Turkey, were investigated. The essential ... -
Chemical composition of the essential oil and hexane extract of Salvia chionantha and their antioxidant and anticholinesterase activities
Tel, Gülsen; Öztürk, Mehmet; Mehmet, Emin Duru; Harmandar, Mansur; Topcu, Gulacti (Pergamon-Elsevier Science Ltd, 2010)The essential oil and methyl ester of hexane extract of Salvia chionantha Boiss. were analysed by GC and GC-MS. Totally, 54 components were detected in the essential oil and all of them were fully determined. Germacrene D ... -
Chemical composition, antioxidant, anticholinesterase and anti-urease activities of Sideritis pisidica Boiss. & Heldr. endemic to Turkey
Deveci, Ebru; Tel-Çayan, Gülsen; Yıldırım, Hasan; Duru, Mehmet Emin (Marmara Univ, Fac Pharmacy, 2017)The objective of this study was to investigate the chemical composition, antioxidant, anticholinesterase and anti-urease activities of essential oil, hexane, acetone and methanol extracts of Sideritis pisidica Boiss. & ... -
Chemical constituents of Porodaedalea pini mushroom with cytotoxic, antioxidant and anticholinesterase activities
Deveci, Ebru; Tel-Çayan, Gülsen; Duru, Mehmet Emin; Öztürk, Mehmet (Springer, 2019)Chemical investigation of Porodaedalea pini led to the isolation of campesterol (1), ergosta-7,24(28)-dien-3 beta-ol (2), dioctyl phthalate (3), ergosterol peroxide (4), pinoresinol (5) and 4-(3,4-dihydroxyphenyl)but-3-en-2-one ... -
Content of Minerals and Trace Elements Determined by ICP-MS in Eleven Mushroom Species from Anatolia, Turkey
Tel-Çayan, Gülsen; Öztürk, Mehmet; Duru, Mehmet Emin; Yabanlı, Murat; Türkoğlu, Aziz (Chiang Mai Univ, Fac Science, 2017)The mineral and trace element content of 11 mushroom species; namely, Fomes fomentarius, Funalia trogii, Ganoderma adspersum, Ganoderma applanatum, Ganoderma lucidum, Gyromitra esculenta, Lyophyllum decastes, Pleurotus ... -
HPLC-DAD Analysis and Versatile Bioactivities of Turkish Sunflower Honeys Using Chemometric Approaches
Duru, Mehmet Emin; Eroğlu, Büşra; Tel-Çayan, Gülsen; Taş-Küçükaydın, Meltem; Küçükaydın, Selçuk; Çayan, Fatih; Ceylan, Özgür (John Wiley and Sons Inc, 2023)Sunflower honey (SH) is bright yellow, fragrant, pollen-flavoured, slightly herbaceous and has a unique taste. The present research aims to examine the enzyme inhibitory, antioxidant, anti-inflammatory, antimicrobial and ... -
Minerals and metals in mushroom species in Anatolia
Tel, Gülsen; Çavdar, Hamide; Deveci, Ebru; Öztürk, Mehmet; Duru, Mehmet E.; Türkoğlu, Aziz (Taylor & Francis Ltd, 2014)Mineral and metal contents of 24 wild mushroom species collected from Anatolia were analysed by inductively coupled plasma optical emission spectrometry. Eight minerals (Na, Mg, Ca, Mn, Fe, Zn, P and K) and six metals (Cr, ... -
Phytochemical contents, antioxidant effects, and inhibitory activities of key enzymes associated with Alzheimer's disease, ulcer, and skin disorders of Sideritis albiflora and Sideritis leptoclada
Deveci, Ebru; Tel-Çayan, Gülsen; Duru, Mehmet Emin; Öztürk, Mehmet (Wiley, 2019)In this study, urease, tyrosinase, cholinesterase inhibitory, and antioxidant activities of various extracts of Sideritis albiflora and Sideritis leptoclada were determined together with the phytochemical contents. In ... -
Phytochemicals from Dodonaea viscosa and their antioxidant and anticholinesterase activities with structure-activity relationships
Muhammad, Akhtar; Tel-Çayan, Gülsen; Öztürk, Mehmet; Duru, Mehmet Emin; Nadeem, Said; Anis, Itrat; Shah, Muhammad Raza (Taylor & Francis Ltd, 2016)ContextDodonaea viscosa (L.) Jacq (Sapindaceae) has been used in traditional medicine as antimalarial, antidiabetic and antibacterial agent, but further investigations are needed.Objective This study determines the antioxidant ...