How does harvest time affect the major fatty acids and bioactive compounds in hazelnut cultivars (Corylus avellana L.)?

Hüseyin İrfan Balık; Selda Kayalak Balık; Orhan Karakaya; Burhan Ozturk

doi:10.3989/gya.0971231.2024

Authors

Hüseyin İrfan Balık Department of Horticulture, Faculty of Agriculture, Sakarya University of Applied Sciences https://orcid.org/0000-0002-9107-7032
Selda Kayalak Balık Sakarya Directorate of Provincial Agriculture and Forestry, Sakarya, Türkiye https://orcid.org/0000-0001-5774-7656
Orhan Karakaya Department of Horticulture, Faculty of Agriculture, Sakarya University of Applied Sciences https://orcid.org/0000-0003-0783-3120
Burhan Ozturk Department of Horticulture, Faculty of Agriculture, Ordu University https://orcid.org/0000-0002-0867-3942

DOI:

https://doi.org/10.3989/gya.0971231.2024

Keywords:

Antioxidant, Corylus avellana, Fatty acids, Oleic acid, Phenolics, Protein

Abstract

This study was conducted to investigate the effects of harvest time on the protein, oil, fatty acids and bioactive compounds in hazelnut cultivars (Corylus avellana L. cvs. ‘Tombul’, ‘Palaz’, ‘Çakıldak’, ‘Okay 28’ and ‘Allahverdi’). The harvest was carried out at 7 different periods with weekly intervals from 20 July to 31 August. As the harvest time progressed, increases and decreases were detected in protein, oil, fatty acids and bioactive compounds. The highest oil content was measured in the H5 and H6 harvest periods. The highest content was determined in H3 for oleic acid. Higher total phenolics, total flavonoids and antioxidant activity were obtained in the first 3 harvest periods than in the other periods. The present findings revealed that the protein, fatty acids and bioactive compounds in hazelnut cultivars may differ according to the harvest time. The results obtained will provide clearer ideas to both the industry and the producers about the optimum harvest time for the intended use of these cultivars.

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