Browsing by Author "Çakır, Oğuz"
Now showing items 1-20 of 23
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Adsorption of cellulase on poly(2-hydroxyethyl methacrylate) cryogels containingphenylalanine
Yavuz, Murat; Baysal, Zübeyde; Çakır, Oğuz (2016)The aim of this study was to prepare a supermacroporous cryogel that can be used for the adsorption ofcellulase. The macroporous cryogel of poly(2-hydroxyethyl methacrylate-N-methacryloyl-l-phenylalanine) [p(HEMA-MAPA)] ... -
Chemical fingerprints and bioactivities of 12 Anatolian Achillea L. species by LC-MS/ MS with chemometric approach: novel phytonutrients, natural food preservatives and chlorogenic acid sources
Yılmaz, Mustafa Abdullah; Ertaş, Abdulselam; Yener, İsmail; Türkmenoğlu, Fatma Pınar; Ölmez, Özge Tokul; Öztürk, Mehmet; Altun, Muhammed; Çakır, Oğuz; Tarhan, Abbas; Boğa, Mehmet (Turkiye Klinikleri, 2022)The objective of this study was to evaluate the biological activities and chemical fingerprint profiles of the extracts obtained from twelve Achillea L. species (A. lycaonica, A. biebersteinii (syn: A. arabica), A. kotschyi ... -
Chemical profile, antioxidant and enzyme inhibition activities of natural Saudi sidr and talh honeys
Al Qahtani, Hayfa W. S.; Yagi, Sakina; Yılmaz, Mustafa Abdullah; Çakır, Oğuz; Tarhan, Abbas; Mustafa, Ahmed Ali; Zengin, Gokhan (Wiley-V C H Verlag Gmbh, 2022)Honey is used since ancient time as a food and to cure many diseases. The present study investigated the chemical constituents, antioxidant and enzyme inhibition activities of natural Saudi Sidr (SH) and Talh (TH) honeys. ... -
A comparative bio-evaluation and chemical profiles of Calendula officinalis L. extracts prepared via different extraction techniques
Ak, Guneş; Zengin, Gökhan; Kouadio İbrahime, Sinan; Mahomoodally, Fawzi M.; Picot-Allain, Marie Carene Nancy; Çakır, Oğuz; Bensari, Souheir; Yilmaz, Mustafa Abdullah; Gallo, Monica; Montesano, Domenico (MDPI AG, 2020)Calendula officinalis L., (marigold), well known for its medicinal properties, has been extensively studied for its therapeutic properties. Nonetheless, as far as the literature could establish, no study has attempted to ... -
Detailed phytochemical evaluation of a locally endemic species (Campanula baskilensis) by LC-MS/MS and its in-depth antioxidant and enzyme inhibitory activities
Yılmaz, Mustafa Abdullah; Çakır, Oğuz; İzol, Ebubekir; Tarhan, Abbas; Behçet, Lütfi̇; Zengin, Gökhan (John Wiley and Sons Inc, 2023)The importance of bioactive plant species in the scientific world is increasing day by day. The relationship between health and traditional-modern life, promotes the creation of new value-added natural products. This is ... -
Detection of Pesticide via Nanoparticle Based Quartz Crystal Microbalance Sensor
Yılmaz, Fatma; Denizli, Adil; Çakır, Oğuz; Baysal, Zübeyde; Göktürk, Ilgım; Bakhspour, Monireh (2020)In this study, chlorpyrifos (Cps) imprinted nanoparticles based QCM sensor were prepared for the detection ofchlorpyrifos pesticide. Cps imprinted poly(ethylene glycol dimethacrylate- N- metacryloyl- (L)- tryptophan) ... -
Enzyme inhibition and antioxidant functionality of eleven Inula species based on chemical components and chemometric insights
Ceylan, Ramazan; Zengin, Gökhan; Mahomoodally, Mohamad Fawzi; Sinan, Kouadio Ibrahime; Ak, Güneş; Jugreet, Sharmeen; Çakır, Oğuz; Ouelbani, Rayene; Paksoy, Mehmet Yavuz; Yılmaz, Mustafa Abdullah (Pergamon-Elsevier Science LTD, 2021)The members of the genus Inula have been widely used in traditional medicinal. In the present study, 11 Inula species were investigated for their phytochemical composition, antioxidant and enzyme inhibitory effects. While ... -
Evaluation of Hedera species as herbal medicine raw materials
Gökkaya, İçim; Yazıcı, Nurdan; Seyhan, Gökçe; Çakır, Oğuz; Yılmaz, Mustafa Abdullah; Barut, Burak; Renda, Gülin (Taylor and Francis Ltd., 2024)This study aimed to evaluate the potential of Hedera colchica as an alternative to Hedera helix species for the treatment of mild inflammatory conditions of the upper respiratory tract and chronic inflammatory bronchial ... -
Identifying phenolics by UPLC–MS/MS in some Prangos Lindl. species and ?-glucosidase inhibitory activities
Önder, Alev; Gülmez, Nazif; Baran, Merve Yüzbaşıoğlu; Uz, Ayşe Kuruüzüm; Trandifilova, Antoanetta; Çakır, Oğuz; Yılmaz, Mustafa Abdullah; Koç, Ahsen Sevde Çınar (Elsevier B.V., 2023)Diabetes mellitus is a chronic metabolic disorder associated with biochemical, physiological, and pathological changes in the liver and characterized by some deficiencies in insulin secretion or insulin action. Prangos ... -
Inhibitory effect of Paliurus spina-christi Mill., Celtis tournefortii L. and Nigella sativa L. on N?–(Carboxymethyl) lysine in meatballs
Aydemir, Mehmet Emin; Arslan, Ali; Takım, Kasım; Altun, Serap Kılıç; Yılmaz, Mustafa Abdullah; Çakır, Oğuz (Elsevier Ltd., 2024)This study was conducted to examine the effect of cooking at different temperatures on the formation of Nε–(carboxymethyl) lysine (CML) after adding Paliurus spina-christi Mill. (PSC), Celtis tournefortii L. (CT) fruits, ... -
The Investigation of Protective Effect of Quercetin in Rats Exposed to Oxidative Stress by 2,3,7,8-Tetrachlorodibenzo-p-Dioxin
Özdemir, İlknur; Çakır, Oğuz (2019)In this study, 28 Wistar Albino male rats were randomly divided into four equal groups. 2,3,7,8-tetrachlorodibenzo-pdioxin (TCDD) was intraperitoneally administered at the dose of 2 µg/kg/week, quercetin was administered ... -
LC-ESI-MS/MS analysis of phenolic compounds and in vitro cytotoxicity and apoptosis-inducing effects of Nonea pulmonarioides extracts
Abdullah, Fuad O.; Muhammad, Haval H.; Yılmaz, Mustafa Abdullah; Çakır, Oğuz; Tarhan, Abbas (Taylor & Francis Ltd, 2024)The chemical composition of Nonea pulmonarioides extracts were investigated for the first time. The phytoconstituents of the methanol extracts were screened by using LC/MS-MS technique. The anticancer activity of the acetone ... -
An LC-MS/MS method validation for the phytochemical quantification of four edible plants
Yılmaz, Mustafa Abdullah; Çakır, Oğuz; Arıca, Enes; Yener, İsmail; Otludil, Birol; Alma, Mehmet Hakkı; Ertaş, Abdulselam (Iğdır Üniversitesi Fen Bilimleri Enstitüsü, 2018)A comprehensive LC-MS/MS method was developed and validated for the quantification of eight plant phytochemicals (cynarin, caffeic acid, syringic acid, p-coumaric acid, o-coumaric acid, vanillic acid, ferulic acid, chlorogenic ... -
A molecularly imprinted nanofilm-based quartz crystal microbalance sensor for the real-time detection of pirimicarb
Çakır, Oğuz (Wiley, 2019)This study aimed to prepare a novel quartz crystal microbalance (QCM) sensor for the detection of pirimicarb. Pirimicarb-imprinted poly (ethylene glycol dimethacrylate-N-metacryloyl-(l)-tryptophan methyl ester) [p ... -
Moleküler baskılama temelli kuvars kristal mikroterazi (QCM) sensörler ile klorpirifos tayini
Çakır, Oğuz (Iğdır Üniversitesi Fen Bilimleri Enstitüsü, 2019)Pestisitler tarımsal üretimin kontrolü gibi pek çok alanda yaygın olarak kullanılmaktadır. Bu maddeler tarımsal ürünlerin artmasına katkıda bulunur ancak toksik özelliklerinden dolayı canlılar üzerinde olumsuz etkilere ... -
Pestisit tayini için manopartiküllerle duyarlılığı arttırılmış moleküler baskılama temelli yüzey plazmon rezonans sensörlerin hazırlanması
Çakır, Oğuz; Bakhshpour, Monireh; Yılmaz, Fatma; Baysal, Zübeyde (Iğdır Üniversitesi Fen Bilimleri Enstitüsü, 2018)Pestisitler yıllardır tarım alanlarında kullanılmaktadır. Ancak bu yaygın kullanım, bilimsel ve endüstriyel topluluklarda pestisitlerin uzun vadeli insan sağlığı riskleri üzerine bilinen toksisitelerinden dolayı ... -
Pestisit tayini için moleküler baskılama temelli yüzey plazmon rezonans ve kuvars kristal mikroterazi sensörlerin hazırlanması
Çakır, Oğuz (2017)Sunulan çalışmanın amacı, çevre sularında eser miktarda bulunan organik fosforlu insektisit dimetoat ve karbamatlı insektisit karbofuranın tayinine yönelik, moleküler baskılama yöntemi kullanılarak kuvars kristal mikroterazi ... -
Pestisit Tayini İçin Moleküler Baskılama Temelli Yüzey Plazmon Rezonans ve Kuvars Kristal Mikroterazi Sensörlerin Hazırlanması ve Uygulamaları
Baysal, Zübeyde; Çakır, Oğuz; Yılmaz, Fatma (2017)Proje kapsamında çevre sularında ve gıdalarda eser miktarda bulunan pestisitlerin tayinine yönelik, moleküler baskılama yöntemi kullanılarak kuvars kristal mikroterazi (QCM) ve yüzey plazmon rezonans (SPR) sensörler ... -
Phytochemical characterization and biological activities of Inula viscosa L. Aiton: a promising plant from Turkey
Eruygur, Nuraniye; Tuzcu, Nevin; Tugay, Osman; Yılmaz, Mustafa Abdullah; Çakır, Oğuz (Taylor & Francis Ltd, 2024)The methanol extract of Inula viscosa (IVM) was investigated for its antioxidant potential using the DPPH and ABTS radical scavenging as well as iron chelating assays (ICA). The total phenol (TPC) and flavonoid contents ... -
Phytochemical profile, antioxidant and antimicrobial potency of aerial parts of Salvia tomentosa Miller
Balkır, Şehnaz; Hazman, Ömer; Aksoy, Laçine; Yılmaz, Mustafa Abdullah; Çakır, Oğuz; Kara, Recep; Erol, İbrahim (Slovensko Kemijsko Drustvo, 2023)Antioxidant activity, antimicrobial potency and components of the aerial parts (leaf, stem, flower and mixture) of Salvia tomentosa Miller were determined qualitatively and quantitatively in this study. Aqueous ...
