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Salghi, Rachid; Armbruster, Wolfgang; Schwack, Wolfgang
Food chemistry, 06/2014, Volume: 153Journal Article
•Authenticity control of high priced argan oils is most important.•We developed a simple and rapid HPLC–ELSD method to identify adulterations of argan oil.•The triacylglycerol patterns selectively and sensitively disclose adulterations. Triacylglycerol profiles were selected as indicator of adulteration of argan oils to carry out a rapid screening of samples for the evaluation of authenticity. Triacylglycerols were separated by high-performance liquid chromatography–evaporative light scattering detection. Different peak area ratios were defined to sensitively detect adulteration of argan oil with vegetable oils such as sunflower, soy bean, and olive oil up to the level of 5%. Based on four reference argan oils, mean limits of detection and quantitation were calculated to approximately 0.4% and 1.3%, respectively. Additionally, 19 more argan oil reference samples were analysed by high-performance liquid chromatography–refractive index detection, resulting in highly comparative results. The overall strategy demonstrated a good applicability in practise, and hence a high potential to be transferred to routine laboratories.
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