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Öğe Geothermal water potential of Bursa (Turkey) province(Scholars Middle East Publishers, 2017-12) Dağ, Beşir; Bilgin, AliÖğe Synthesis, characterization and antioxidant activity of heterocyclic Schiff bases(Journal of the Chinese Chemical Society, 2020-08-04) Aral, Tarık; Dağ, Beşir; Kızılkaya, Hakan; Genç, Nusret; Erenler, RamazanSchiff base derivatives have gained great importance due to revealing a great number of biological properties. Schiff bases were synthesized by treatment of 4-amino-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one (1) with various aldehydes in methanol at reflux. In addition, diamine was reacted with an aldehyde to yield the corresponding Schiff bases. The structures of synthesized Schiff bases were elucidated by spectroscopic methods such as microanalysis, 1 H-NMR, 13C-NMR, and FTIR. Antioxidant activities of synthesized Schiff bases were carried out using different antioxidant assays such as 1,1-diphenyl-2-picryl-hydrazyl free radical (DPPH• ) scavenging, 2,20 -azino-bis (3-ethylbenzthiazoline-6-sulfonic acid) (ABTS) radical scavenging, and reducing power activity. (E)-4-((1H-indol-3-yl)methyleneamino)-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one (3), (E)-1,5-dimethyl-4-((2-methyl-1H-indol-3-yl) methyleneamino)-2-phenyl-1H-pyrazol-3(2H)-one (5), (E)-1,5-dimethyl-2-phenyl-4-(thiophen-2-ylmethyleneamino)-1H-pyrazol-3(2H)-one (7), (E)-1,5-dimethyl2-phenyl-4-(quinolin-2-ylmethyleneamino)-1H-pyrazol-3(2H)-one (9), (1S,2S, N1,N2)-N1,N2-bis((1H-indol-3-yl)methylene)cyclohexane-1,2-diamine (11), and (1S,2S,N1,N2)-N1,N2-bis((2-methyl-1H-indol-3-yl)methylene)cyclohexane-1,2-diamine (12) were synthesized in high yields. Compound 5 displayed a good ABTS•+ activity. Compound 3 revealed the outstanding activity in all assays. Compound 7 has the best-reducing power ability in comparison to other synthesized compounds. Although compounds 5, 11, 12 are new, compounds 3, 7, 9 are known. Due to revealing a good antioxidant activity, the synthesized compounds (3, 5, 7) have the potential to be used as synthetic antioxidant agents.Öğe New schiff base ligand derived from 4-aminoantipyrine: Synthesis and spectroscopic characterization(Azərbaycan Dövlət Neft və Sənaye Universiteti, 2017) Dağ, Beşir; Yaşar, Fevzi; Çakmak, ReşitÖğe Effect of some total phenolic, antioxidants, physico-chemical properties, mineral and heavy metal content of apricots drying types(Batman Üniversitesi, 2016-12-28) Dağ, Beşir; Tarakçı, Zekai; Demirkol, MelikeKayısı bol miktarlarda A vitamini deposudur ve aynı zamanda demir, kalsiyum, fosfor ve bakır da dahil olmak üzere önemli miktarlarda mineral içermektedir. Kayısıyı incelediğimizde şekil olarak semiz, dolgun ve renk olarak turuncu ve altın sarısı olarak nitelendirilebilir. kayısının tamamen olgunlaşmış herhangi bir türü çok yumuşak olmasa da kolayca işlenebilir ve kuruma sırasında şeklini kaybedebilir. Kayısı numuneleri üç farklı kuru kayısı olarak analiz edildi bunlar; gün kurusu, islim ve taze kuru şeklinde sıralanır. Bu farklı kayısı numunelerinde, toplam fenolik madde, antioksidan, renk, kuru madde ve Ca, Mg, Na, Mn, Fe, Cu, Zn, Cr, Co Pb, Ni, Sn, Cd and Mo gibi bazı ağır metal ve mineral içeriklerinin tayini yapıldı. Kayısı numunelerinin renk değerleri,kuru madde değerleri kül tayini ve ağır metal ve mineral değerleri istatistiksel olarak incelendi. Kuru kayısı dünya çapında popular bir üründür.Öğe Influence of yogurt adding on physicochemical and sensorial properties of some lettuce types(WFL Publisher, 2013) Tarakçı, Zekai; Uǧur, Atnan; Temiz, Hasan; Dağ, BeşirThe aim of this study was to investigate the effects of adding yogurt and roasting treatment on some physicochemical, L*, a* and b* colour values and organoleptic acceptability properties of lettuce types. The 10 different lettuce varieties included kasam, mangano, robinson, olenka, arapsaçi{dotless}, red leaf, lolorosso, red salat, palamet and salanova were used. After cleaning and cutting into 0.5 mm, the lettuces were roasted with equal amount added yogurt for about 5 min and then applied to the mixing process. There were significant differences in dry matter and pH values between the lettuces added yogurt and raw lettuces. While dry matter of lettuces was increased significantly with yogurt, the pH levels were decreased. The whiteness values (L*) for lettuces have caused significant differences by adding yogurt and roasting applications. L* values of control sample without lettuces were significantly higher than the samples prepared by adding yogurt to lettuces. Lettuce types had a significant effect on the L* colour of samples. The lettuces were a significant a* color values between before and after roasting. After adding yogurt to lettuces; b* values of kasam, robinson and olenka colour values were significantly higher than the other samples prepared by adding yogurt to lettuce types. The lowest overall acceptability scores were detected for olenka, robinson and lolorosso lettuce types while the highest overall acceptability scores were detected for arapsaci, red salat and salanova lettuce types, which were common use in Turkish meals.Öğe Synthesis and anticorrosion studies of 4-[(2-nitroacetophenonylidene)-amino]-antipyrine on SAE 1012 carbon steel in 15 wt.% HCl solution(Taylor & Francis, 2020-11-16) Gerengi, Hüsnü; Çakmak, Reşit; Dağ, Beşir; Solomon, M. M; Tüysüz Akbal, Hatice Aslıhan; Kaya, ErtuğrulA novel corrosion inhibitor, ((E)-1,5-dimethyl-4-((1-(3-nitrophenyl)ethylidene)amino)-2-phenyl-1,2-dihydro-3H-pyrazol-3-one) (DNPP) was synthesized in high yield by the condensation reaction of 4-aminoantipyrine with 2-nitroacetphenone derived from acetophenone as a starting material and characterized by FT-IR, 1H, and 13C NMR techniques. DNPP was tested against the corrosion of SAE 1012 carbon steel in 15 wt.% HCl solution using electrochemical and surface characterization techniques. Results obtained show that DNPP is effective in retarding the corrosion of SAE 1012 carbon steel. With 4 mM of DNPP, the charge transfer resistance of SAE 1012 in 15 wt.% HCl solution is raised from 17.42 to 140.50 Ω cm2 and the substrate surface is protected by 87%. The inhibition is through adsorption mechanism (mixed-adsorption type) and has been confirmed by SEM and EDAX results. Potentiodynamic polarization results reveal that DNPP acted as a mixed-type corrosion inhibitor. DNPP is a promising candidate for the formulation of an inhibitor cocktail for the strong acid environment.Öğe The amide derivatives of L-tyrosine: Synthesis and spectroscopic characterization(Azərbaycan Dövlət Neft və Sənaye Universiteti, 2017) Dağ, Beşir; Yaşar, Fevzi; Çakmak, ReşitÖğe Mineral and heavy metal by inductively coupled plasma optical emission spectrometer in traditional Turkish yogurts(Academic Journals, 2013-05-23) Tarakçı, Zekai; Dağ, BeşirYogurt, a traditional Turkish dairy product is common in all region of Turkey. The different heavy metals were determined in commercial yogurts by inductively coupled plasma optical emission spectrometer (ICP–OES). Concentrations of calcium (Ca), phosphorus (P), sodium (Na), magnesium (Mg), aluminum (Al), zinc (Zn), iron (Fe), copper (Cu), manganese (Mn), boron (B), molybdenum (Mo), cadmium (Cd), cobalt (Co), chromium (Cr), nickel (Ni) and lead (Pb) were measured by ICP–OES; Varian Vista-Pro, Mulgrave, Victoria, Australia. Traditional Ordu yogurts generally have means of 1126.0 mg/kg Ca, 983.1 mg/kg P, 585.3 mg/kg Na, 112.4 mg/kg Mg, 1.73 mg/kg Fe, 0.71 mg/kg Cu, 4.51 mg/kg Zn, 0.0027 mg/kg Co, 0.017 mg/kg Cr, 18.11 mg/kg Al, 0.69 mg/kg B, 0.86 mg/kg Mn, 0.41 mg/kg Mo, 0.05 mg/kg Ni, 0.055 mg/kg Pb and 0.002 mg/kg Cd.Öğe Synthesis, characterization of novel some schiff base ligands derived from 4-aminoantipyrine(Azərbaycan Dövlət Neft və Sənaye Universiteti, 2017) Dağ, Beşir; Yaşar, Fevzi; Çakmak, ReşitÖğe Investigation of some properties of chestnut honey produced in Black Sea Region of Turkey(Batman Üniversitesi, 2017) Dağ, Beşir; Sıralı, Recep; Tarakçı, ZekaiThe aim of the present study was to characterize the physical and biochemical properties of black sea region chestnut honey samples. Physiochemical parameters, such as moisture content, water-insoluble substance, free acidity, diastase activity, fructose/Glucose ration, total fructose+glucose; sucrose and hydroxymethylfurfural (HMF) content were measured. The moisture content 18.13±1.53 %, water-insoluble substance full samples values 0.00 %, free acidity 20.78±2.44 meq/kg, diastase activity 14.20±2.87, fructose/glucose ration 1.44±0.05, total fructose+glucose 71.15±2.26 %, sucrose content 2.00±0.56 % and HMF content 0.57±0.09 mg/kg were founded.
