Veysel Umut ÇELENK
(Ege Üniversitesi, İlaç Araştırma Geliştirme ve Farmakokinetik Uygulamalar Merkezi, İzmir, Türkiye)
Zinar Pınar GÜMÜŞ
(İlaç Enstitüsü Toksikoloji ve İlaç Bilimleri, Ege Üniversitesi, Bornova, İzmir, Türkiye)
(Necmettin Erbakan Üniversitesi, Ereğli Mühendislik ve Doğa Bilimleri Fakültesi, Konya, Türkiye)
(Zade Vital İlaç Anonim Şirket, Konya, Türkiye)
(Ege Üniversitesi, Sağlık Bilimleri Enstitüsü, İlaç Araştırmaları ve Farmakokinetik Geliştirme ve Uygulama Merkezi, İzmir, Türkiye)
Yıl: 2018Cilt: 5Sayı: 1ISSN: 2149-0120 / 2149-0120Sayfa Aralığı: 1 - 18İngilizce

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Analysis of Chemical Compositions of 15 Different Cold-Pressed Oils Produced in Turkey: A Case Study of Tocopherol and Fatty Acid Analysis
Many people tend to prefer natural foods and supplements nowadays. Considering this tendency, this study assessed the most significant in quality and purity parameters tocopherol and fatty acid compositions of cold-pressed oils, namely black cumin, sesame, sunflower, poppy, pomegranate, nettle, pumpkin, grape, safflower, flax, canola seed, wheat germ, peanut, hazelnut, and walnut. This study deals with the sample preparation and validation of tocopherols using an HPLC-FLD method for simultaneous determination of α-β-γ-, and δ-tocopherols, and analysis of fatty acid methyl esters (FAME) with using GC-FID. The validated HPLC method was applied for the tocopherols’ analysis and measurement uncertainty was calculated for tocopherols and some fatty acids. The obtained data were evaluated by using principal component analysis to show the relationship between quality parameters and seed oils. Wheat germ, hazelnut, safflower, and sunflower oils have the highest tocopherol contents respectively with a predominance of α-tocopherol. Seed oils’ fatty acid compositions were classified according to proportions of oleic, linoleic, and other fatty acids. This study shows that the evaluated seeds are valuable sources of natural antioxidants and some specific and polyunsaturated fatty acids. The applied method can also be helpful for the industry to obtain quality analysis approach.
DergiAraştırma MakalesiErişime Açık
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