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    Effect of cluster drop intensity on nut traits, biochemical properties, and fatty acids composition in the 'cakildak' hazelnut cultivar
    (Springer, 2022) Karakaya, Orhan; Yaman, İzzet; Kırkaya, Hüseyin; Uzun, Serkan; Kaya, Tuncay; Balta, Mehmet Fikret
    This study was conducted to determine the effect of cluster drop intensity (CDI) on nut traits, biochemical properties, and fatty acids composition in the 'cakildak' hazelnut cultivar. Many nut traits, biochemical properties, and fatty acids composition were affected by CDI. Depending on the increase in CDI, nut weight, kernel weight, nut size, kernel size, total phenolic, total flavonoids, and antioxidant activity increased. Nut weight, kernel weight, and kernel ratio were determined from 2.00 (low) to 2.31 g (high), 1.09 (low and intermediate) to 1.25 g (high), and 53.34 (intermediate) to 54.27 (low), respectively. The highest total phenolics, total flavonoids, and antioxidant activity (3675 mg per 100 g, 37.3 mg per 100 g, and 5.14 mmol per 100 g, respectively) were detected in high CDI, while the lowest (1947 mg per 100 g, 17.5 mg per 100 g, and 2.01 mmol per 100 g, respectively) were determined in low CDI. The effects of CDI on fatty acids composition were different. Oleic acid ranged from 82.46 (low) to 84.06% (intermediate), while linoleic acid was determined between 6.77 (high) and 8.78% (low). According to principal component analysis, many of the traits investigated were associated with high CDI, except nut length, kernel length, oleic acid, and linoleic acid. In conclusion, it was determined that bioactive compounds and fatty acids composition are significantly affected depending on CDI. Also, the findings of this study showed the potential consequences of the coming hazards of global warming on hazelnuts and will be helpful for future studies.
  • Küçük Resim Yok
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    Nut characteristics of ‘Fosa’ and ‘Kargalak’ hazelnuts related to number of nuts per cluster
    (International Society for Horticultural Science, 2018) Balta, Mehmet Fikret; Balta, Fikri; Yarılgaç, Tarık; Karakaya, Orhan; Uzun, Serkan; Kırkaya, Hüseyin
    This research was conducted to determine nut dimensions change as a function of number of nuts cluster-1 (one, two, or three) in ‘Foşa’ and ‘Kargalak’ hazelnuts grown in Sakarya and Trabzon districts in Turkey in 2016. Randomized block designs with three replications were used. Nine ocaks were used for each cultivar, for a total of 18 ocaks in total. The nut traits investigated were nut weight, nut length, nut width, nut depth, shell thickness, kernel percentage, kernel weight, kernel length, kernel width, kernel depth, and diameter of the central cavity. The results showed that nut weight, kernel weight, kernel percentage and shell thickness in both ‘Foşa’ and ‘Kargalak’ decreased as the number of nuts cluster-1 increased. Further, nut and kernel dimensions in both cultivars decreased as the number of nuts cluster-1 increased. © 2018 International Society for Horticultural Science. All Rights Reserved.
  • Küçük Resim Yok
    Öğe
    Taşova (Amasya) Yöresinde Yetiştirilen ‘Ekmek’ Ayva Çeşidinin Fiziksel ve Biyokimyasal Özellikleri
    (2021) Balta, Mehmet Fikret; Karakaya, Orhan; Yaman, Izzet; Uzun, Serkan; Kirkaya, Hüseyın
    Çalışma, Amasya ili Taşova ilçesinde yetiştirilen ‘Ekmek’ ayva çeşidinin fiziksel ve biyokimyasal özelliklerini belirlemek amacıyla yürütülmüştür. Çalışmada meyve ağırlığı 305.43 g, meyve eti sertliği 62.50 N, suda çözünebilir kuru madde miktarı %11.64, titre edilebilir asitlik %0.83, C vitamini içeriği 11.60 mg/100 ml, glikoz içeriği 3.10 g/100 ml, sukroz içeriği 1.87 g/100 ml, fruktoz içeriği 7.62 g/100 ml, toplam fenolik 121.8 mg/100 g, toplam flavonoid 18.4 mg/100 g, antioksidan aktivitesi DPPH testine göre 0.46 mmol/100 g ve FRAP testine göre 2.67 mmol/100 g olarak belirlenmiştir. Sonuç olarak, ‘Ekmek’ ayva çeşidinin insan sağlığına faydalı ve hastalıklara karşı koruyucu bir etkiye sahip olan fenolikler ve antioksidanlar bakımından zengin olduğu belirlenmiştir.