Abstract
The bioactive compounds and “in vitro” antioxidant activity measured by three antioxidant assays of some traditional and non-traditional cold-pressed edible oils from Macedonia were object of this study. The fatty acid composition showed dominance of monounsaturated oleic acid in “sweet” and “bitter” apricot kernel oils with percentages of 66.7 ± 0.5 and 57.8 ± 0.3%, respectively. The most dominant fatty acid in paprika seed oil was polyunsaturated linoleic acid with abundance of 69.6 ± 2.3%. The most abundant tocopherol was γ-tocopherol with the highest quantity in sesame seed oil (57.6 ± 0.1 mg/100 g oil). Paprika seed oil, sesame seed oil and sweet apricot oil were the richest source of phytosterols. DPPH assay was the most appropriate for the determination of the antioxidant activity of cold-pressed sunflower oil due to high abundance of α-tocopherol with a level of 22.8 ± 1.1 mg/100 g of oil. TEAC assay is the best for the determination of the antioxidant activity of sesame seed oil and paprika seed oils as the richest sources of phenolic compounds. β-carotene assay was the most suitable assay for oils obtained from high pigmented plant material. Triacylglycerols and phytosterol profiles can be used as useful markers for the origin, variety and purity of the oils.
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Acknowledgement
Financial support from Deutscher Akademischer Austausch Dienst (DAAD) for Sanja Kostadinović Veličkovska as a participant in the program “Academic Reconstruction of South Easter Europe” is gratefully acknowledged.
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Kostadinović Veličkovska, S., Catalin Moţ, A., Mitrev, S. et al. Bioactive compounds and “in vitro” antioxidant activity of some traditional and non-traditional cold-pressed edible oils from Macedonia. J Food Sci Technol 55, 1614–1623 (2018). https://doi.org/10.1007/s13197-018-3050-0
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DOI: https://doi.org/10.1007/s13197-018-3050-0