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Öğe Bazı Ruta L. ekstraktlarının biyoaktif madde içerikleri ve radikal kovucu aktiviteleri(KAHRAMANMARAS SUTCU IMAM UNIV REKTORLUGU, 2019) Yaman, Cennet.; Ulukuş, Deniz.; Tugay, Osman.Ruta L. is a genus of the Rutaceae family, mostly used as a traditional medicinal plant. In this study, the antioxidant activities of methanolic and ethanolic extracts of wild Ruta chalepensis L. (above ground plant) and Ruta montana L. (leaves-flowers, stems) were assessed. The results showed that methanol extract of flower-leave of Ruta montana provided the highest yield of extraction (15.11%, 151.12 +/- 0.78 mg/g) whereas the lowest yield was obtained in ethanol extract of stems of Ruta montana (2.67%, 26.66 +/- 0.50 mg/g). Total flavonoid content in dry weight of methanol and ethanol extracts of Ruta chalepensis was found higher than other extracts except methanol leaves-flowers extract of Ruta montana. It was determinated that ethanol extracts of Ruta montana stem sustained less total flavonoid and phenolic content. Also, radical scavenging activities such as 2,2-diphenyl-1-picryl-hydrazyl-hydrate (DPPH) and 2, 2'-Azino-Bis-3-Ethylbenzothiazoline-6-Sulfonic acid (ABTS) of extracts was investigated, and according to the solvent, it was revealed that extracts of Ruta chalepensis exhibited high activity. As a result, it has been discussed that Ruta can be used as a natural antioxidant by taking advantage of these data.Öğe Bioactivity-guided isolation of cytotoxic and antioxidant phytochemicals from four Cousinia species from stenocephala bunge section(WOLTERS KLUWER MEDKNOW PUBLICATIONS, 2019) Pasayeva, Leyla.; Üstün, Osman.; Demirpolat, Eren.; Karatoprak, Gökçe S.; Tugay, Osman.; Kosar, Müberra.Background: Asteraceae family contains several cytotoxic compounds bearing genus. Cousinia genus is included in the Asteraceae; it has not been studied phytochemically in detail. Objective: In this study, chemical compositions of four Cousinia species (Cousinia davisiana [CD], Cousinia foliosa, Cousinia ramosissima, and Cousinia stenocephala [CS]) were evaluated according to their cytotoxic and antioxidant effects using bioactivity-guided isolation. Materials and Methods: The cytotoxic effect was investigated with Sulphorhodamine B method against Colo205 (human colon carcinoma), A549 (human non- small cell lung cancer) cell lines, and antioxidant activity tested with 1,1-diphenyl-2-picrylhydrazyl, 2,2' azino-bis 3-ethylbenzothiazoline-6-sulphonic acid scavenging tests, and beta-carotene/linoleic acid co-oxidation test. Purified compounds were elucidated by one-dimensional and two-dimensional nuclear magnetic resonance and mass spectroscopic techniques. The quantitative and qualitative determination of unpurified compounds within the extracts was carried out by liquid chromatography-mass spectrometry/mass spectrometry. Results: CS methanol extract, dichloromethane subextract, and FR-3 showed more cytotoxicity; isolated compound (psi-taraxasterol) showed no cytotoxic activity. CD methanol extract and n-butanol subextract showed significant antioxidant activity. Conclusion: This is the first report that these phytochemical compounds were identified in Cousinia genus, and it is thought that these compounds could contribute to the chemotaxonomy of the genus.Öğe Chemical composition and anti-inflammatory activity of Kitaibelia balansae boiss(SOC STIINTE FARMACEUTICE ROMANIA, 2019) Karatoprak, Gökçe Şeker.; Paşayeva, Leyla.; Köngül Şafak, Esra.; Göger, Fatih.; Tugay, Osman.; Koşar, Müberra.Aerial part extracts of Kitaibelia balansae Boiss. were examined for their phenolic contents, as well as anti-inflammatory activities. The chemical compositions of the extracts were analysed by spectrophotometric and chromatographic (HPLC/ MS/MS and HPLC-PDA) approaches. To measure anti-inflammatory activity, the effects of the extracts on nitric oxide (NO) and Tumour Necrosis Factor-alpha (TNF-alpha) levels were measured in lipopolysaccharide (LPS) treated murine macrophage cell line (RAW 264.7). The ethyl acetate fraction was found to be abundant in phenolic compounds (259.78 +/- 15.07 mg(GAE)/gextract). Rutin was identified as the major compound in all the extracts. The ethyl acetate fraction potentially inhibited NO and TNF-alpha production (37.26 mu M and 1781.524 pg/mL, respectively, 6 h) in LPS induced cells.Öğe Haplophyllum ermenekense (Rutaceae), a new species from Turkey(PENSOFT PUBL, 2018) Ulukus, Deniz.; Tugay, Osman.A new species of Haplophyllum, Haplophyllum ermenekense (Rutaceae) is described and illustrated in line drawing. It grows on stony slopes of Ermenek town, Karaman province, in southern Turkey. It is compared with the closely related species H myrtifolium. H. ermenekense is distinguished from the morphologically similar H myrtifolium chiefly by sepal shape, petal size, capsule size, presence of capsule hair and appendage form. On the other hand, the seed coat and pollen grains surface of H. ermenekense and H. myrtifolium are demonstrated in SEM photographs. In addition to the detailed description, the illustration, distribution map, conservation status and ecology of the new species are also provided.Öğe In vitro antioxidant capacity and phytochemical characterization of Eryngium kotschyi Boiss(JOURNAL PHARMACY & PHARMACOGNOSY RESEARCH-JPPRES, 2020) Pasayeva, Leyla.; Safak, Esra Kongul.; Arigun, Tunahan.; Fatullayev, Hanifa.; Tugay, Osman.Context: Eryngium kotschyi is one of the species of Eryngium genus and was endemic to Turkey. It was known, that traditionally uses of this plant in the South-Western part of Turkey for the treatment of various diseases. Aims: To evaluate the antioxidant capacities of methanol extract and ethyl acetate, n-butanol and water sub-extracts as well as to determine the phytochemical composition and to quantify the major antioxidant compounds in the active sub-extract. Methods: Besides the total phenolic compounds and total flavonoid compounds, the antioxidant capacity of E. kotschyi was evaluated by DPPH center dot, ABTS+center dot and FRAP methods and qualitative and quantitative determination of phytochemical constituents in active sub-extract by LC-MS/MS. Results: The highest total phenolic (173.710 +/- 1.088 mg gallic acid equivalent/ g(exteact)) and total flavonoid content (86.978 +/- 0.650 mg catechin equivalent/ g(exteact)) was found in ethyl acetate sub-extract of E. kotschyi (EKE) and this sub-extract showed the highest antioxidant capacity on DPPH center dot (IC50 = 0.264 +/- 0.040 mg/ mL), ABTS+center dot (at a concentration of 0.125 mg/mL equivalent to 0.497 mu M Trolox) and FRAP (at a concentration of 1 mg/ mL equivalent to 1476 +/- 5.292 mmol Fe2+) tests. Preliminary examination of the mass spectrums revealed the presence of 24 phytochemical compounds in this sub-extract and 7 of them was quantified. According to quantitative analyses the main compounds of EKE sub-extract were rosmarinic acid (490.820 +/- 0.703 mu g/mgextoet), chlorogenic acid (80.405 +/- 0.170 mu g/mg(exteeet)), isorhamnetin 3-O-rutinoside (72.280 +/- 0.33 mu g/ mgexteeet), rutin (63.020 +/- 0.052 mu g/mg(exteeet)) and caffeic acid (55.153 +/- 0.523 mu g/ mg(exteeet)). Conclusions: The data suggest that EKE possess utilizable antioxidant properties in vitro. The antioxidant capacity of this sub-extract could be due to high content of phenolic and flavonoid contents.Öğe Morphology, anatomy and palynology of two endemic Cousinia cass. species (sect. Cousinia, Asteraceae) and their taxonomic implications(PAKISTAN BOTANICAL SOC, 2020) Ulukuş, Deniz.; Tugay, Osman.The morphological, anatomical and palynological features of Cousinia eleonorae Hub.-Mor. and Cousinia humilis Boiss. are provided along with their taxonomic significance. Their expanded description, distribution map and coloured photographs are also given. The morphological characteristics of leaves, phyllaries are taxonomically significant for distinguishing Cousinia species. In addition, the micromorphological characteristics of pollen grains and achenes are provided with the use of scanning electron microscopy. Anatomical characters such as number of cortex cells, number of vascular bundles and midrib shape are found to be significant characters. Moreover, exine sculpturing pattern and shape of pollen grains can be used for taxonomic purposes.
