Determination of polyphenols,tocopherols, and antioxidant capacity in virgin argan oil (Argania spinosa,Skeels) |
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| Authors: | Rocío Marfil Rafael Giménez Olga Martínez Paula R. Bouzas José A. Rufián‐Henares Marta Mesías Carmen Cabrera‐Vique |
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| Affiliation: | 1. Departamento de Nutrición y Bromatología, Facultad de Farmacia, Universidad de Granada, Granada, Spain;2. Departamento de Bioquímica y Biología Molecular II, Facultad de Farmacia, Universidad de Granada, Granada, Spain;3. Departamento de Estadística e I.O, Facultad de Farmacia, Universidad de Granada, Granada, Spain |
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| Abstract: | This study establishes data on polyphenols, tocopherols, and antioxidant capacity (AC) of virgin argan oil. A total of 22 samples from Morocco were analyzed. Total polyphenol content ranged between 6.07 and 152.04 mg GAE/kg. Total tocopherols varied between 427.0 and 654.0 mg/kg, being γ‐tocopherol the major fraction (84.68%); α‐, β‐, and δ‐tocopherols represent 7.75, 0.33, and 7.29%, respectively. No influence of oil extraction method on total tocopherols was observed. The AC of argan virgin oils determined by the ABTS method in n‐hexane oils dilution ranged between 14.16 and 28.02 mmol Trolox/kg, and by the ABTS, DPPH, and FRAP methods in methanolic oil extracts between 2.31–14.15, 0.19–0.87, and 0.62–2.32 mmol Trolox/kg, respectively. A high correlation was found between ABTS and DPPH methods applied to a methanolic oil extract. Virgin argan oil presents a higher polyphenol and tocopherol content, and total AC than other edible vegetable oils. |
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| Keywords: | Antioxidant capacity Polyphenols Tocopherols Virgin argan oil |
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