Profiling triacylglycerols, fatty acids and tocopherols in hazelnut varieties grown in Turkey

TAŞ N., GÖKMEN V.

JOURNAL OF FOOD COMPOSITION AND ANALYSIS, cilt.44, ss.115-121, 2015 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 44
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1016/j.jfca.2015.08.010
  • Dergi Adı: JOURNAL OF FOOD COMPOSITION AND ANALYSIS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.115-121
  • Anahtar Kelimeler: Hazelnut, Corylus avellana, Turkish hazelnut varieties, Hazelnut oil, Triacylglycerols, Fatty acids, Tocopherols, Food analysis, Food composition, CORYLUS-AVELLANA L., PERFORMANCE LIQUID-CHROMATOGRAPHY, IONIZATION MASS-SPECTROMETRY, VEGETABLE-OILS, LIPID CHARACTERISTICS, CHEMICAL-COMPOSITION, OXIDATIVE STABILITY, OLIVE OIL, NUT, CULTIVARS
  • Hacettepe Üniversitesi Adresli: Evet

Özet

Profiles of triacylglycerols, fatty acids and tocopherols of fourteen Turkish hazelnut varieties harvested in the years of 2013 and 2014 were identified. Glyceryl trioleate (000) was found to be the most dominant triacylglycerol in hazelnut varieties that ranged between 45.1-59.6 and 39.3-60.2% in 2013 and 2014, respectively. However, 1,2-dioleoyl-3-linoleoyl-glycerol (OOL) was in higher amounts in few varieties. 1-Stearoyl-2,3-dioleoyl-glycerol (SOO) was found to contribute least to the triacylglycerol content of hazelnut varieties, while glyceryl trilinoleate (LLL) was in lesser amounts in few varieties. The percentages of fatty acids in hazelnut varieties were in the following order; oleic acid (18:1n9) > linoleic acid (18:2n6) > palmitic acid (16:0) > stearic acid (18:0) independently of the harvest years. All hazelnut varieties were found to contain alpha-, beta-, and gamma-tocopherol, but not delta-tocopherol. The contents of alpha-tocopherol, the most abundant form of tocopherols, ranged between 16.5 mg/100 g oil (Man) and 36.3 mg/100 g oil (Tombul) in 2013, and between 9.56 mg/100 g oil (Sivri) and 17.3 mg/100 g oil (Kalinkara) in 2014, respectively. (C) 2015 Elsevier Inc. All rights reserved.