The Effect of Region on Nut and Biochemical Traits of Mincane Hazelnut Cultivar

Abstract

In this study investigated the effect of region on the nut and biochemical traits in Mincane hazelnut cultivar. The study was carried out in the Trabzon (Black Sea Region) and Sakarya (Marmara Region) districts, in 2021 and 2022. The material of the study consisted of the nut of Mincane hazelnut cultivar grown in both regions. Depending on regions, nut weight was determined from 1.89 (Black Sea) to 2.14 g (Marmara), while kernel weight was found from 1.89 (Black Sea) to 2.14 g (Marmara). The highest total phenolics was detected in Black Sea region (118.1 mg 100 g-1). Conversely, Marmara region had the highest total flavonoids (8.1 mg 100 g-1) and antioxidant activity (1027.8 and 738.1 µmol 100 g-1 according to DPPH and FRAP assays, respectively). As a result, the region had a significant effect on the investigated nut and biochemical traits. The Marmara region produced the best results for many of the traits examined.

The Effect of Kernel Size on Bioactive Compounds in Kalınkara Hazelnut Cultivar

“…According to the kernel size, the total phenolics were determined between 759 mg 100 g -1 (medium) and 819 mg 100 g -1 (large) in the study. In Kalınkara hazelnut cultivar, the total phenolics were determined to be 1006 mg 100 g -1 (Göncüoğlu- Taş and Gökmen, 2015), 436.5 mg 100 g -1 (Balık, 2021), 709 mg 100 g -1 -1181 mg 100 g -1 (Karakaya, 2021), and between 783 -1098 mg 100 g -1 (Karakaya, 2023). In general, the results obtained from the study in terms of total phenolics were found to be compatible with other studies.…”

“…The total flavonoids were determined between 8.2 mg 100 g -1 (medium) and 8.7 mg 100 g -1 (small). In Kalınkara hazelnut cultivar, the total flavonoids were determined to be 12.59 mg 100 g -1 (Balık, 2021), 5.07 mg 100 g -1 (Göncüoğlu-Taş and Gökmen, 2015), 5.8 mg 100 g -1 -10.6 mg 100 g -1 (Karakaya, 2021), and between 7.5 mg 100 g -1 -11.5 mg 100 g -1 (Karakaya, 2023). It can be said that the results obtained from other studies in terms of total flavonoids were similar to this study's results.…”

“…Antioxidant activity was determined between 0.46 mmol 100 g -1 (medium) and 0.60 mmol 100 g -1 (large) according to the FRAP assay, while it was determined between 1.83 mmol 100 g -1 (medium) and 1.92 mmol 100 g -1 (small) according to the DPPH assay. In Kalınkara hazelnut cultivar, the antioxidant activity was determined to be 2.37 mmol 100 g -1 (according to DPPH), 2.04 mmol 100 g -1 (according to FRAP) (Balık, 2021), 0.46 mmol 100 g -1 -1.19 mmol 100 g -1 (according to FRAP) and 0.60-1.37 (according to DPPH) (Karakaya, 2021), 0.56 mmol 100 g -1 -1.20 mmol 100 g -1 (according to FRAP) and 1.64 mmol 100 g -1 -1.91 mmol 100 g -1 (according to DPPH) (Karakaya, 2023). In this study, kernel size was effective in antioxidant activity.…”