Browsing by Author "Polat, Y."

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Comparison of Kumquat (Fortunella Spp.) Volatiles Using Various Spme Fibres Followed by Gc/Ms Techniques and Determination of the Total Phenol and Antioxidant Compounds
(International Society for Horticultural Science, 2024) Polat, Y.; Oğuz, I.; Eksi, E.; Cimen, B.; Kafkas, N.E.; Çelik, F.
Kumquat is the smallest citrus fruit with an edible peel. It is a member of the Fortunella genus in the Rutaceae family and is native to south-eastern China. After understanding the health benefits of kumquat fruits, farmers started their plantations in Turkey. Therefore, this study was aimed to determine the aromatic profiles of volatile compounds in the peel and juice of kumquat by SPME headspace technique for CAR/PDMS/DVB, PDMS followed by GC/MS (gas chromatography-mass spectrometry) method and determine the biochemical characteristics (namely total phenolic and antioxidant compounds) of kumquat. The volatile compounds are known to contain different biochemical substances that can be classified as aldehydes, alcohols, esters, terpenic compounds, and other compounds. Kumquat juice is primarily composed of terpenoids, and its main terpene compound is d-limonene. The headspace technique led to the identification of 62 compounds, among which d-limonene was the most abundant. Moreover, a total of 5 different aldehydes, 8 esters, 15 alcohols, 2 ketones, and 32 terpenes were identified and quantified in the peel and juice of kumquats. Also, as a result of this study, the total amount of phenols determined in kumquat peel was higher than the total amount of phenols in fruit juice. On the other hand, the total antioxidant capacity determined in the juice of kumquats was higher than that in the kumquat peel. © 2024 International Society for Horticultural Science. All rights reserved.
Effects of Quince Rootstocks and Pear Cultivars on Fruit and Yield Characteristics
(Centenary University, 2023) Kurt, T.; Öztürk, A.; Faizi, Z.A.; Polat, Y.
The research carried out to evaluate the effects of quince rootstocks [Quince Province BA29 (BA29), Quince A (QA), Quince C (MC)], pear cultivars, and research years on fruit quality and yield efficiency in the years 2020-2021. The highest fruit weight was obtained from BA29 (196.02 g), and the lowest was from MC (158.09 g). In the cultivars, the highest fruit weight was obtained from ‘Abate Fetel’ (210.85 g), the lowest from Santa Maria (156.73 g). The highest number of fruits (17.06 pieces tree-1), yield per tree (3.13 kg tree-1), yield per hectare (5982.8 kg ha-1), and yield per trunk cross sectional area (0.30 kg cm-1) obtained from BA29 followed by QA. In the cultivars, the highest number of fruits (19.60 pieces tree-1), yield per tree (2.98 kg tree-1), and yield per hectare (5685.00 kg ha-1) were obtained from ‘Santa Maria’. In the research years, the pre-harvest fruit drop rate (PHFDR 11.04%) and black spotted fruit rate (BSFR 13.79%) were observed to be higher in 2021, while the marketable fruit rate (MFR 77.03%) was observed to be higher in 2020. In the rootstocks, the highest PHFDR (11.24%) was observed on BA29 rootstocks, while the highest MFR (73.72%) was recorded on QA. In terms of cultivars, the highest PHFDR (10.73%) was observed in ‘Williams’, while the highest BSFR (16.41%) was in ‘Deveci’, and the highest MFR (76.31%) in ‘Santa Maria’. As a conclusion, the highest yield and marketable fruit rate were obtained from the ‘Santa Maria’ cultivar and yield from BA29 rootstock. It could be suggested that semi-dwarf cultivars and rootstocks for suitably perform under high density pear orchards. © 2023, Centenary University. All rights reserved.
Evaluation Possibilities of Different Parts of Pomegranate, a Historical Fruit and Its Effects on Health
(EDP Sciences, 2024) Polat, Y.; Çelik, F.; Kafkas, N.E.
Today, with the faster development of science and technology, people have started to pay more attention to healthy living and consuming foods that are beneficial for human health. In this context, the value given to fruit species has become increasingly important and the importance of plants whose seeds are consumed has increased, as well as colourful fruits and vegetables. Pomegranate is a fruit grown in many countries in the world, especially in the Mediterranean climate, and its economic value has been increasing in recent years. This fruit has gained great nutritional importance not only because of its flavour but also because it contains many antioxidant substances and phenolic compounds that are beneficial to human health. There are nearly fifty pomegranate varieties registered in our country. These pomegranate varieties range from sweet to sour, from small-in size to large in size, and from hard-seeded to soft-seeded in terms of skin colour and fruit colour. In recent years, the use of pomegranate parts such as peel, seeds, and flowers in cosmetics and food industry has become widespread and studies on the antioxidant properties of different parts of pomegranate have attracted interest. The aim of this review is to investigate the health effects of pomegranate fruit, different parts of pomegranate, and products made from pomegranate. © The Authors, published by EDP Sciences.
Fruit Features of Some Almond (Prunus Amygladus L.) Genotypes Selected From Şanlıurfa Region
(Centenary University, 2020) Polat, Y.; Kazankaya, A.
This study was performed to determine promising chance seedlings in the native almond populations of Hilvan, Bozova, Suruç and Şanlıurfa province during 2017 and 2018. Tree and fruit characteristics of seedling almond trees were identified for 102 genotypes in the first year and 43 genotypes in the second year with respect to almond selection breeding objectives. In conclusion, 21 genotypes were determined to be promising genotypes according to the weighted rating method. Flowering dates of these to promise genotypes in 2017 and 2018 were determined from March 10th to March 26th and between February 22nd and March 21st, respectively. The shell weight of them changed between 2.31 g and 6.84 g. Kernel weight of selected 21 promising almonds changed between 0.74-1.34 g, kernel rate between % 18.21-41.26, skin thickness 2.23-3.48 mm, double and twin kernel rate was % 0 and safe kernel rate between percent 60.00-100 In terms of fruit shape, one of the genotypes was an ellipse, other 18 genotypes were long and oval and the remaining 2 genotypes were heart-shaped. The kernel color was determined as light colored in one genotype, the remaining 7 genotypes were medium light colored, 11 genotypes were dark colored and rest of genotype were too dark. © 2020, Centenary University. All rights reserved.
Fruit Quality Characteristics in Bergamot (Citrus Bergamia)
(International Society for Horticultural Science, 2024) Polat, Y.; Bilgin, O.F.; Cimen, B.; Koc, G.; Kafkas, N.E.
Bergamot (Citrus bergamia), is a citrus fruit belonging to the family Rutaceae, of the genus Citrus. The origin of the bergamot still remains mysterious. This plant has been successfully cultivated in Calabria (Italy) since the 18th century in a small area with the ideal habitat. Production is mostly limited to the Ionian Sea coastal areas of the province of Reggio di Calabria in Italy, to such an extent that it is a symbol of the entire city. After realizing the health benefits of bergamot fruits farmers started their plantations in Turkey. Therefore, the aim of the present study is to investigate the aromatic profiles in the fruit rind and juice of bergamot through SPME headspace methods using (CAR/PDMS/DVB, PDMS) coupled with GC/MS (gas chromatography-mass spectrometry) technique and to determine the physicochemical parameters (color parameters, total antioxidant, and total phenol). The volatile compounds are known to contain different biochemical substances that can be classified as aldehydes, alcohols, esters, terpenic compounds, and other compounds. Most terpenoids form from the juice of bergamot and its major terpene compound is d-limonene. The headspace technique led to the identification of 91 among which d-limonene was the most abundant compound. Moreover, a total of 10 different aldehydes, 11 esters, 19 alcohols, 1 acid, and 50 terpenes were identified and quantified in the fruit rind and juice of bergamots. Also, as a result of this study, radical scavenging activity (1,1-diphenyl-2-picrylhydrazyl (DPPH)) and total phenols were determined to be 92.53% (fruit juice) and 523.7 (fruit juice) mg gallic acid equivalent 100 mL-1, respectively. The L*, a*, b*, hue, and chroma values of the fruit crust color were 76.53, 0.89, 59.82, 84.16, and 59.83, respectively. © 2024 International Society for Horticultural Science. All rights reserved.
Potential Status of Persimmon (Diospyrus Kaki L.) in Türkiye and Its Impact on Human Health
(EDP Sciences, 2024) Polat, Y.; Kazan, M.; Çelik, F.; Kafkas, N.E.
Anatolia is the gene center of many fruit species grown in the world and is also very rich in terms of fruit species and varieties. Diospyrus kaki L., known as persimmon, is one of these fruit species. Considering Türkiye's ecological conditions, persimmon has a great potential for production. In recent studies, the potential health effects of persimmon have been cited as an important factor, increasing the popularity and consumption of persimmon. In addition, persimmon has become the center of attention in recent years due to the attractive orange color of the fruit, its distinctive taste and structure, rich in antioxidants and phenolic compounds. In this review study, it was aimed to increase awareness of the production potential of persimmon grown in Turkiye by revealing its production potential, and to shed light on decision-makers in future production planning by providing information in terms of economic importance and health. © The Authors, published by EDP Sciences.