Browsing by Author "Öztürk, Mehmet"
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Abietane diterpenoids as butyrylcholinesterase inhibitors from Salvia species
Topcu, G.; Akdemir, A.; Öztürk, Mehmet; Boga, M.; Kola, U. (Georg Thieme Verlag Kg, 2012)Salvia (sage) species have been used as medicinal plants since ancient times in the treatment of cold, sore throat, tuberculosis, angina pectoris, stomache ache, and menstrual disorders and they have been known as sedative, ... -
The Addition of Opuntia ficus-indica Ethanolic Extract to a Skimmed Milk-Based Extender Impacts Ram Sperm Quality
Allai, Larbi; Druart, Xavier; Terzioğlu, Pınar; Louanjli, Noureddine; Nasser, Boubker; Öztürk, Mehmet; El Amiri, Bouchara (PMC, 2023)Recently, researchers have focused on the use of natural antioxidants to improve semen quality as a key element for successful artificial insemination. In this context, the first aim of this study was to determine the ... -
Alkaloids, Coumarins and Lignans from Haplophyllum Species
Ulubelen, Ayhan; Öztürk, Mehmet (Acg Publications, 2008)Although there are a number of Haplophyllum species in the world, H. acutifolium (DC.) G. Don. H. buxbaumii (Poiret) G. Don, H. buxbaumii (Poiret) G. Don, subsp. Buxbaumii, H. cappadocium Spach, H. glabrinum, H. hispanicum ... -
Anatoluin A and B isolated from medicinal Tricholoma anatolicum are new cytotoxic ergostanoids against the most common cancers
Kaplaner, Erhan; Öztürk, Mehmet; Duru, Mehmet Emin; Aydoğmuş Öztürk, Fatma (Taylor and Francis Ltd., 2022)Tricholoma anatolicum is an edible mushroom from the matsutake group growing under Cedar trees. Bioactivity-guided fractionation of Tricholoma anatolicum afforded two new (1 and 2), three known ergosterols (3–6), and four ... -
Antibacterial Activity of Citrus limon Peel Essential Oil and Argania spinosa Oil Against Fish Pathogenic Bacteria
Öntaş, Canan; Baba, Esin; Kaplaner, Erhan; Küçükaydın, Selçuk; Öztürk, Mehmet; Ercan, Menekşe Didem (Kafkas Univ, Veteriner Fakultesi Dergisi, 2016)The main objective of the study was the identification of antibacterial activity of lemon (Citrus limon L.) peel essential oil and argan (Argania spinosa L.) oil against fish pathogenic bacteria. Antibacterial activity was ... -
Antibacterial, antioxidant, anti-cholinesterase potential and flavonol glycosides of Biscutella raphanifolia (Brassicaceae)
Boudouda, Houria Berhail; Zeghib, Assia; Karioti, Anastazia; Bilia, Anna Rita; Öztürk, Mehmet; Aouni, Mahjoub; Kabouche, Zahia (Univ Karachi, 2015)Different extracts of the aerial parts of Biscutella raphanifolia (Brassicaceae), which has not been the subject of any study, were screened for the phytochemical content, anti-microbial, antioxidant and anti-cholinesterase ... -
Antibiofilm formation, antioxidant and anticholinesterase activities of essential oil and methanol extract of Marrubium deserti de Noé
Chemsa, A.E.; Zellagui, A.; Öztürk, Mehmet; Erol, E.; Ceylan, O.; Duru, M.E.; Gherraf, N. (Mohammed Premier University, 2016)The essential oil obtained from the aerial parts of Marrubium deserti de Noé. (Lamiaceae), growing in the North fringe of the Algerian Sahara, was analyzed by GC-MS. Thirty-eight compounds were identified, representing ... -
Antibiofilm, antiquorum sensing and antioxidant activity of secondary metabolites from seeds of Annona senegalensis, Persoon
Tamfu, Alfred Ngenge; Ceylan, Özgür; Fru, Godloves Chi; Öztürk, Mehmet; Duru, Mehmet Emin; Shaheen, Farzana (Academic Press Ltd- Elsevier Science Ltd, 2020)The increasing resistance of bacteria to antibiotics has motivated the interest in potent natural compounds capable of disrupting bacterial cell-to-cell communication. Column chromatography of seed extract of Annona ... -
Anticancer and apoptotic effects of a polysaccharide extract isolated from Lactarius chrysorrheus Fr. in HepG2 and PANC-1 cell lines
Mutlu, Doğukan; Çakır, Cansel; Öztürk, Mehmet; Arslan, Şevki (Institut za Bioloska Istrazivanja, 2023)Mushrooms are widely used in many cultures for nutritional and health benefits. The Lactarius species is found in the Aegean region of Turkey. Lactarius chrysorrheus Fr. is a wild mushroom that contains a milky juice. In ... -
Anticholinesterase and Antioxidant Activities of Natural Abietane Diterpenoids with Molecular Docking Studies
Topcu, Gulacti; Akdemir, Atilla; Kolak, Ufuk; Öztürk, Mehmet; Boga, Mehmet; Bahadori, Fatemeh; Cakmar, Seda Damla Hatipoglu (Bentham Science Publ Ltd, 2020)Background: Alzheimer's Disease (AD) is one of the most prevalent causes of dementia in the world, and no drugs available that can provide a complete cure. Cholinergic neurons of the cerebral cortex of AD patients are lost ... -
Anticholinesterase and antioxidant activities of Savoury (Satureja thymbra L.) with identified major terpenes of the essential oil
Öztürk, Mehmet (Elsevier Sci Ltd, 2012)Satureja thymbra was used as a spice in Anatolia and Greece. The essential oil and the methanol extract of Satureja thymbra were evaluated for cholinesterase inhibitory effects against acetylcholinesterase and butyrylcho ... -
Antioxidant abietane diterpenoids from Salvia barrelieri
Kabouche, Ahmed; Kabouche, Zahia; Öztürk, Mehmet; Kolak, Ufuk; Topçu, Gülaçtı (Elsevier Sci Ltd, 2007)The root extract of endemic Algerian Salvia species Salvia barrelieri Ettling and its diterpenoids were investigated for potential antioxidant activity. From its acetone extract, a new natural abietane diterpenoid ... -
Antioxidant activity of stem and root extracts of Rhubarb (Rheum ribes): An edible medicinal plant
Öztürk, Mehmet; Aydoğmuş-Öztürk, Fatma; Duru, Mehmet Emin; Topçu, Gülaçtı (Elsevier Sci Ltd, 2007)The antioxidant activity of chloroform and methanol extract of roots and stems of Rhubarb (Rheum ribes L.), which are used for medicinal purposes and also its fresh stems and petioles are consumed as vegetable, was studied. ... -
Antioxidant and anticholinesterase active constituents from Micromeria cilicica by radical-scavenging activity-guided fractionation
Öztürk, Mehmet; Kolak, Ufuk; Topçu, Gülaçtı; Öksüz, Sevil; Choudhary, M. Iqbal (Elsevier Sci Ltd, 2011)From the acetone extract of Micromeria cilicica, two new (1 and 2) and five known (3-7) compounds were obtained through radical-scavenging activity guided isolation. Structures of the compounds were identified as piperitone ... -
Antioxidant and anticholinesterase activities of five wild mushroom species with total bioactive contents
Tel, Gülsen; Öztürk, Mehmet; Duru, Mehmet Emin; Türkoğlu, Aziz (Taylor & Francis Ltd, 2015)Context: Recently, mushrooms are interesting natural products to be investigated due to exhibiting various bioactivities. Objective: This study determines the antioxidant and anticholinesterase activities of various extracts ... -
Antioxidant and Anticholinesterase Activities of Some Dialkylamino Substituted 3-Hydroxyflavone Derivatives
Culhaoglu, Burcu; Capan, Asli; Boga, Mehmet; Öztürk, Mehmet; Ozturk, Turan; Topcu, Gulacti (Bentham Science Publ Ltd, 2017)Background: Flavones, are a class of naturally occuring polyphenolic compounds which have 2-phenylchromen-4-one structure. Various studies showed that flavones have several pharmacological activities such as antioxidant, ... -
Antioxidant and Anticholinesterase Activity Evaluation of ent-Kaurane Diterpenoids from Sideritis arguta
Ertaş, Abdülselam; Öztürk, Mehmet; Boğa, Mehmet; Topçu, Gülaçtı (Amer Chemical Soc, 2009)The petroleum ether and acetone extracts of the aerial parts of Sideritis arguta afforded two new and six known diterpenoids with the ent-kaurane skeleton. The structures of the new diterpenoids were determined as ent-7 ... -
Antioxidant and anticholinesterase constituents of Salvia poculata
Kolak, Ufuk; Hacıbekiroğlu, Işıl; Öztürk, Mehmet; Özgökçe, Fevzi; Topçu, Gülaçtı; Ulubelen, Ayhan (Scientific Technical Research Council Turkey-Tubitak, 2009)Two triterpenoids, namely 2 alpha,3 alpha-dihydroxy-24-nor-4(23), 12-oleanadien-28-oic acid (1) and ursolic acid (2); 4. avonoids, namely 5-hydroxy-7,4'-dimethoxyflavone (3), cirsimaritin (4), eupatilin (5), and salvigenin ... -
Antioxidant and antidiabetic activities of hexane extract of Genista januensis var. lydia
Çakır, C.; Orak H.H.; Argon M.; Çalışkan H.; Öztürk, Mehmet (Bulgarska Akademiya na Naukite, 2022)The genus Genista L. (Fabaceae) has been of interest for human beings since ancient times with its cosmopolitan distribution. Since α-amylase and α-glucosidase are the chief enzymes of diabetes mellitus, this study aims ... -
Antioxidant and Cholinesterase Inhibition Activities of Three Tricholoma Species with Total Phenolic and Flavonoid Contents: The Edible Mushrooms from Anatolia
Tel-Çayan, Gülsen; Apaydın, Müjde; Duru, Mehmet Emin; Öztürk, Mehmet (Springer, 2012)Tricholoma species, known as odorous mushrooms, are consumed in Anatolia as well as in the world. The antioxidant activity of extracts of Tricholoma fracticum, Tricholoma imbricatum and Tricholoma terreum was determined ...
