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Öğe Antioxidant capacity and bioactive contents of mulberry species from Eastern Anatolia Region of Turkey(Assoc Pharmaceutical Teachers India, 2018) Gündoğdu, Müttalip; Tunçtürk, Murat; Berk, Selma; Şekeroğlu, Nazım; Gezici, SevgiIn this study, we aimed to determine biochemical contents of white (Morus alba L.) and black (Morus nigra L.) mulberry genotypes grown in the Hakkari region. At the end of the study, organic acids, phenolic compounds, sugars, vitamin C and antioxidant capacities of mulberry species were determined. Black mulberry genotypes were found to contain higher antioxidant capacity than white mulberry genotypes. The highest antioxidant capacity was detected in the 30YK03 (25.55 mu moITE/g) black mulberry genotype. While phenolic compounds varied in mulberry species, especially gallic acid (57.78 mg/100g), chlorogenic acid (53.13 mg/100g), and rutin (37.77 mg/100g) had the highest values. Malic acid was found to be higher than other organic acids and was found to be 13.51 g/100g in the highest 30HK03 genotype. Although sugar contents varied in mulberry species, glucose was determined higher than fructose and sucrose in mulberries.Öğe Diversity on color and phenolic compounds in apricot fruits(Springer, 2017) Gündoğdu, Müttalip; Ercişli, Sezai; Berk, Selma; Kan, Tuncay; Canan, İhsanTurkey dominate world apricot production for a long time sharing 23% of world fresh apricot production and the country also realizes 82% of the total dried apricot trade of the world. In this study, phenolic compounds and fruit skin color in eight apricot cultivars grown in Malatya province of Turkey and correlations between phenolic compounds and fruit skin color were determined. Among apricot cultivars, 'Wilson Delicious' was the most orange-colored fruit skin color. Pyrogallol and rutin were found to be predominant phenolic compounds for all cultivars. Pearson correlation coefficients between pyrogallol, catechol, chlorogenic acid, caffeic acid, epigallocatechin and b color values were found statistically significant (P < 0.01). 'Harcot' cultivar came into prominence because of high pyrogallol (1596.26 mu g g(-1)), catechol (119.89 mu g g(-1)), chlorogenic acid (281.44 mu g g(-1)), caffeic acid (167.86 mu g g(-1)) and epigallocatechin (132.46 mu g g(-1)) levels. Overall 'Ordubat' cultivar had the lowest phenolic compounds. Among the yellow-colored cultivars, 'Harcot' and 'Wilson Delicious' had the richest phenolic compounds among yellow and orange-colored cultivars, respectively.Öğe Influence of foliar application with gibberellic acid on phenolic and bioactive compounds of strawberry fruits(Springer, 2021) Gündoğdu, Müttalip; Berk, Selma; Yıldız, Kenan; Kaki, Barış; Tuna, Selma; Canan, İhsan; Okatan, VolkanIn present study, effects of foliar GA3 treatments on phenolic compounds, organic acids, vitamin C content and agro-morphological characteristics of 5 strawberry cultivars were investigated. Principle component analysis was also performed to assess the variations in and relationships between bioactive compounds contents of cultivars treated with GA(3). Although they varied depending on cultivars, the highest organic acid contents were generally determined in fruits treated with 50 ppm GA3. Both GA(3) treatments increased vitamin C contents in 'Albion' and 'Aromas' but decreased in 'Seascape' fruits. GA treatment caused significant change in some phenolic compounds content. While 100 ppm GA(3) treatment significantly increased catechin content of 'Albion' and 'Aromas', it decreased catechin content of 'Seascape' fruits. Results of PCA analysis showed that 'Sweet Ann' differ from other cultivars by poor ascorbic and fumaric acid content. 'Albion' and 'Honeoye' differ from other cultivars by high p-coumaric and low ellagic acid contents.Öğe Role of maturity stages on phenolic compounds and organic acids contents in red currant fruits(Taylor & Francis Inc, 2020) Berk, Selma; Gündoğdu, Müttalip; Tuna, Selma; Taş, AkgülThe aim of this research was to determine the changes in the organic acids and phenolic compounds in fruits of red currant due to maturity. It was harvested two cultivars (Red Lake and Rovada cv.) during four different maturity stages (green color, veraison, pink color, and red color) in red currant orchard in Bolu province. In red currant fruits 12 phenolic compounds (gallic acid, protocatechuic acid, catechin, chlorogenic acid, vanillic acid, syringic acid, p-coumaric acid, ferulic acid, o-coumaric, rutin, phloridzin, and quercetin), 6 organic acids (malic, succinic, citric, fumaric, tartaric, and oxalic acid), and vitamin C were determined depending on maturity. All ripening times were found to be rich in catechin and rutin. It was determined that the contents of vanillic acid, ferulic acid, routine, phloridzin, and quercetin increased with maturation. In the study, the highest organic acids contents were determined at green stages. The content of vitamin C varied depending on the ripening. The results suggest that red currant fruits were richest in organic acids and phenolic compounds in red maturity period.Öğe Role of polyamines in post-harvest storage: Influence of post-harvest putrescine treatment on quality properties and specific biochemical contents of cornelian cherry fruit(Elsevier, 2024) Tas, Akgul; Gundogdu, Muttalip; Berk, Selma; Kibar, Hakan; Uyak, CuneyitIn this study, postharvest 0.3 mM, 0.5 mM and 1.0 mM putrescine doses were applied to cornelian cherry fruit, which is a climacteric fruit, and the fruit were stored for 45 days. Putrescine applications maintained fruit quality criteria by preventing changes in weight loss, soluble solids content (SSC), acidity and respiration rate. Putrescine 1.0 mM dose prevented the degradation of phenolic compounds, organic acids, and vitamin C contents in cornelian cherry fruit. In the application of 1.0 mM dose of putrescine (45 days), malic acid was determined as 64.07 g kg-1, vitamin C as 13.20 mg 100 g-1 and citric acid as 11.42 g kg-1. As a result of storage, it was observed that the most effective dose preventing the degradation of phenolic acids (chlorogenic acid 9.73 mg 100 g-1; ocoumaric acid 3.78 mg 100 g-1; ferulic acid 2.43 mg 100 g-1) was 1.0 mM putrescine application. The most effective doses on flavonoids were found to be 1.0 mM (rutin), 0.5 mM (catechin) and 0.3 mM (quercetin). As a result, it was concluded that the exogenous application of putrescine can be used as a post-harvest tool to preserve the quality and storage life of cornelian cherry fruit.Öğe Variation in organic acid, sugar and phenolic compounds in fruits of historical apple cultivars(Univ Agr Sci & Veterinary Med Cluj-Napoca, 2018) Çelik, Ferit; Gündoğdu, Müttalip; Ercişli, Sezai; Kaki, Barış; Berk, Selma; İlhan, Gülce; Sağbas, Halil IbrahimKnowledge about diversity of local apple cultivars is particularly important and helps to ensure that specific cultivars are available when and where farmers need them. The phenolic content, organic acids and sugars were investigated in the four historical apple cultivars ('Aslik', 'Cebegirmez', 'Bey Elmasi' and 'Arapkizi') grown in Van province, located in Eastern Anatolia, Turkey. In the study, ellagic acid (63.034 mg per 100 ml) was found to be higher than other phenolic compounds and followed by vanilic acid, caffeic acid and routine, respectively. When examined the apple cultivars, it has been found that the 'Bey Elmasi' cultivar has the highest content of six phenolic acids (chlorogenic, ferulic, o-coumaric, p-coumaric, catechin and quercetin). The organic acid contents were as follows: malic>fumaric>succinic>citric>tartaric among cultivars. 'Arapkizi' cultivar possessed the highest value of four organic acids except of tartaric acid. It was determined that fructose was the major sugar for all apple cultivars. There was a positive correlation among gallic, ellagic acid and routine. Similarly, the positive correlation was observed among malic, fumaric and succinic acid. However the negative correlation between citric acid and all sugars was observed. As a result, 'Bey Elmasi' and 'Arapkizi' cultivars with higher phenolic content, 'Arapkizi' cultivar with higher organic acid content and 'Aslik' cultivar with higher sugar content comes to the foreground. Results indicated the importance of local apple germplasm to use of them for future apple breeding activities to increase inner quality.
