Fatty Acids, Tocopherol and Phenolic Contents of Organic and Conventional Grown Hazelnuts

Karaosmanoglu H., Ustun N. Ş.

JOURNAL OF AGRICULTURAL SCIENCE AND TECHNOLOGY, cilt.23, sa.1, ss.167-177, 2021 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 23 Sayı: 1
  • Basım Tarihi: 2021
  • Dergi Adı: JOURNAL OF AGRICULTURAL SCIENCE AND TECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, CAB Abstracts, Food Science & Technology Abstracts, Veterinary Science Database
  • Sayfa Sayıları: ss.167-177
  • Anahtar Kelimeler: alpha-Tocopherol, Antioxidant, Atherogenicity, Conventional food, Corylus avellana, Organic food, CORYLUS-AVELLANA L., LIPID CHARACTERISTICS, CHEMICAL-COMPOSITION, ANTIOXIDANT ACTIVITY, FOOD, OILS, INTENTION, PROFILES, COLOR
  • Ondokuz Mayıs Üniversitesi Adresli: Evet

Özet

The aim of this study was to determine the total phenolic content and antioxidant activity as well as fatty acids and tocopherol compositions of organic and conventionally grown hazelnut (Corylus avellana). Organic hazelnuts were found to be richer in terms of palmitoleic acid (P< 0.05). The production method did not influence other parameters, but the variety factor affected many parameters. In all varieties, oleic acid was the predominant fatty acid followed by linoleic, palmitic, and stearic acids. The lowest atherogenic index was determined at Sivri and no difference was detected in terms of thrombogenic index (P< 0.05). In all varietiesa, beta, gamma, delta-tocopherol were detected and alpha-tocopherol was dominant. The highest amount of tocopherol was detected in Mincane (549.73 mg kg(-1) fat). The highest amount of phenolic substance (546.53 mg 100 g(-1) GAE) and antioxidant activity (48.84%) were detected in Cakildak, probably due to the plant exposure to stress in high and cold regions. Results of the extensive analyses showed that organic hazelnuts had no significant differences with the conventional ones in terms of the parameters examined.