Browsing by Author "Sensoy, Ruhan Ilknur Gazioglu"

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Determination of Phenolic Compound and Organic Acid Contens of Some Grape Varieties Grown in Hizan (Bidis) Province
(Kahramanmaras Sutcu Imam Univ Rektorlugu, 2020) Uyak, Cuneyt; Dogan, Adnan; Sensoy, Ruhan Ilknur Gazioglu; Keskin, Nurhan; Cavusoglu, Seyda; Cakmakci, Ozlem; Kunter, Birhan
Aim of this study was to determine phenolic compound and organic acid contents of 17 local grape varieties grown in Hizan (Bitlis) province of Turkey. Organic acid and phenolic compound amounts were determined via HPLC (High Performance Liquid Chromatography). Organic acids amount of grape varieties ranged from 1362.06 mu g g(-1) (Sapi Beyaz) to 4269.90 mu g g(-1) (Husni Beyaz) fortartaric acid and from1072.70 mu g g(-1) (Alaki) to 2858.69 mu g g(-1) (Kus Uzumu) for malic acid. Phenolic compound amounts of grape varieties ranged from 4.718 mu g g(-1) (Husni Beyaz) to 33.177 mu g g(-1) (Sapi Yesil) for gallic acid, from 6.293 mu g g(-1) (Beyaz Bineteti) to 20.201 mu g g(-1 )(Alaki) for vanilic acid, from 0.174 mu g g(-1 )(Beyaz Bineteti) to 2.830 mu g g(-1) (Alaki).for rutin, from 0.193 mu g g(-1) (Beyaz Bineteti) to 1.395 mu g g(-1 )(Kus uzumu) for protocatechuic acid, from 0.509 mu g g(-1) (Husni Beyaz) to 12.036 mu g g(-1) (Beyaz Guzane) for clorogenic acid, from 0.050 mu g g(-1 )(Siyah Guzane) to 0.485 mu g g(-1) (Husni Beyaz) for syringic acid, from 0.043 mu g g(-1) (Alaki) to 0.211 mu g g(-1) (Kirmizi Tayfi) for p-coumaric acid, from 0.041 mu g g(-1) (Beyaz Sinciri) to 1.238 mu g g(-1) (Siyah Guzane) for ferulic acid, from 0.023 mu g g(-1) (Beyaz Sinciri) to 1.083 mu g g(-1) (Kus Uzumu) for o(-)coumaric acid from 0.209 mu g g(-1) (Siyah Guzane) to 2.360 mu g g(-1) (Inek Memesi) for resveratrol, from 0.086 mu g g(-1) (Beyaz Sinciri) to 1.228 mu g g(-1) (Alaki) for florodiz.
Effects of Arbuscular Mycorrhizal Fungus (Amf) and Whey Applications on the Grapevine (Vitis Vinifera L.) Cuttings Exposed To Salt Stress
(Polish Society Magnesium Research, 2022) Sensoy, Ruhan Ilknur Gazioglu
This study was carried out to determine some morphological and physiological reactions to the application of organic bio-stimulants, arbuscular mycorrhizal fungus (AMF) and whey (W), which were used against the negative results of salt stress in the cuttings of the Ercis grapevine cultivar. The cuttings were rooted in pots filled with perlite with no drainage. Once the cuttings were rooted, the buds were formed and the nodes extended, the salt application was initiated. The budded cuttings were irrigated with 1% Hoagland Nutrient Solution added with three dif-ferent NaCl concentrations (0, 50 and 100 mmol). Moreover, AMF, W, and AMF+W were applied and the response of the budded cuttings against salt stress was monitored. As well as making analyses of macro-and microelements (P, K, Ca, Na, Mg, Fe, Mn, and Zn) in the shoots and roots, some parameters, such as shoot diameter, shoot height, root width, root length, number of leaves, fresh shoot weight, dry shoot weight, fresh root weight, dry root weight and leaf water content (LWC) were investigated, and the salt amount in the growth media was determined. At the end of the study, it was shown that AMF, W, and their combination (AMF + W), which had been applied against the physiological and morphological changes induced by salt stress and its adverse effects, had a positive effect on the majority of the parameters compared to the con-trol group. Moreover, it was demonstrated that the use of AMF and W in the context of sustain-able viticulture would be beneficial in terms of promoting the rooting and development of cut- tings and protecting the plants against soil salinity that creates abiotic stress.
Grapevine Leaf Area Measurements by Using Pixel Values
(Publ House Bulgarian Acad Sci, 2018) Dogan, Adnan; Uyak, Cuneyt; Keskin, Nurhan; Akcay, Anil; Sensoy, Ruhan Ilknur Gazioglu; Ercisli, Sezai
Determination of the leaf area has great importance in terms of plant development due to giving significant information about photosynthetic capacity of the plants. Leaf area measurements also reveal significant information about growth potential. Nowadays it can be done in laboratory and with portable expensive devices. The primary objective of the present study is to determine leaf areas in computer environment without a need for a special device and functional program only over the image pixel values and to put forth the availability of such method in leaf area measurements. In this study, real leaf areas of local grape varieties grown in Hizan (Bitlis) region were determined by using image processing technique of Photoshop CS6, pixel values and pixel-area relation. The accuracy of the measurement was determined as between 99.96-100.00%. It was concluded that Photoshop CS6 software was sufficient for leaf area measurements.
Phenolic Contents, Organicacids and Antioxidant Capacities of Twenty Grape (Vitis Vinifera L.) Cultivars Having Different Berry Colors
(Springer, 2023) Kisaca, Gani; Sensoy, Ruhan Ilknur Gazioglu
Grapes are rich in phytochemicals and have many health benefits. Some phytochemicals properties of grape must and some grape and seed characteristics of twenty selected grapevine (Vitis vinifera L.) cultivars having black, red or white skin color were investigated in the present study. The organic acids detected in various ranges were tartaric acid, malic acid, citric acid, succinic acid, and fumaric acid. Tartaric acid, malic acid, citric acid, succinic acid, and fumaric acid reached the highest values in the cultivars of Kirmizi sinceri, Beyaz sinceri, Kirmizi sinceri, Duvrevi and Emiri, respectively. Citric acid reached the highest value in red cultivars and fumaric acid reached the highest value in black cultivars. The phenolic compounds detected in various ranges were rutin, protocatechuic acid, ellagic acid, quercetin, gallic acid, chlorogenic acid, p-coumaric acid, ferulic acid, q-coumaric acid, and fluorodizine. For the highest contents of rutin, protocatechuic acid, ellagic acid, quercetin, gallic acid, chlorogenic, p-coumaric acid, ferulic acid, q-coumaric acid, and fluorodizine were detected in the cultivars of Karrod, Gozane, Polati, Karrod, Duvrevi, Cicike nator, Polati, Resealya and Beyaz sinceri, respectively. Ellagic acid was high in black varieties; rutin was high in red varieties; and the highest chlorogenic acid, p coumaric acid, ferulic acid, protocatechuic acid and gallic acid were found in white cultivars. Total antioxidant capacity ranged from 0.64 to 7.53 mg L-1, and its highest rate was observed in cv. Emiri. Except for q-coumaric acid, all analysis results were significantly diferent [(P < 0.01), (P < 0.05)] among the studied garpe cultivars.
Phytochemical Characteristics of Some Grape Cultivars Grown in High Altitude Conditions at Lake Van Basin
(Springer, 2024) Bas, Ethem Omer; Sensoy, Ruhan Ilknur Gazioglu
Grapes, recognized for their diverse phytochemical compounds, were investigated across 9 local varieties in the Lake Van Basin at an altitude of 1700 m. Utilizing HPLC and FRAP methods, we assessed the phytochemical traits, focusing on phenolic substances and organic acids. Notable findings include the highest concentrations of protocatechuic, syringic, and ferulic acid in the cv. Beyaz Kismis; rutin and p-qumaric acid in cv. Beyaz Kecimemesi; Gallic acid in cv. Siyah Kecimemesi; o-qumaric acid in cv. Kizil Uzum; and Phloridzin in cv. Telli Baba. For organic acids, tartaric acid prevailed in cv. Siyah Kismis; malic acid in cv. Siyah Kecimemesi; citric acid in cv. Siyah Kismis; and fumaric acid in cv. Siyah Kecimemesi. The highest total antioxidant capacity was observed in cv. Siyah Kismis. Significant variations in phenolic substances, organic acids (excluding citric acid), and total antioxidant capacity were identified among varieties. The elevated bioactive content in grapes cultivated under high-altitude and cool climate conditions positions the region favorably for grape-related products (e.g., juice, wine, vinegar).
Pruning and Fertilization Impact on Leaf-Mineral Composition in High-Altitude Cultivation of Grapevines (Vitis Vinifera L.)
(Springer, 2024) Tutus, Ali; Sensoy, Ruhan Ilknur Gazioglu
This study aimed to investigate the impact of various plant nutrition applications and two pruning levels on the leaf mineral composition of grapevines (Vitis vinifera L. cv. 'Ercis Uzumu') cultivated under high-altitude conditions. The experiment, employing a randomized block experimental design with three replicates, includes a control group, and vines pruned to 30 or 40 buds, fertilized with poultry manure (PM), poultry manure + inorganic foliar fertilizer (PM + IFF), or poultry manure + organic foliar fertilizer (PM + OFF). Pruning significantly influences leaf mineral content, particularly phosphorus (P < 0.01), manganese (P < 0.05), and nickel levels (P < 0.05). Furthermore, fertilizer applications exhibit significant effects on phosphorous, magnesium, copper, iron, sodium, cadmium, chrome, and nickel levels (P < 0.01), with organic plant nutrition prominently enhancing leaf mineral content. Additionally, observations reveal higher ratios of P, K, Ca, and Mg in the 30 bud pruning per vine applications, as well as similar trends in micro-elements (Zn, Mn, and Cu) except for Fe. This research provides valuable insights into optimizing grapevine cultivation practices at high altitudes.