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A LC–MS method involving direct injection of extra-virgin olive oil (EVOO) – after a simple dilution – for determining its phenolic compounds has been developed. Optimization of the most appropriate solvent for sample dilution, selection of the optimum oil/solvent ratio, and establishment of column cleaning strategy and maximum number of injections were some of the most relevant steps. Then, the analytical...
This article reports a simple methodology using dispersive liquid–liquid microextraction combined with CZE. It has been applied for the simultaneous determination of phenolic compounds such as caffeic, gallic, vanillic, syringic, cinnamic, p‐coumaric acids and oleuropein, apigenin, luteolin, 3‐hydroxytyrosol, and tyrosol, in virgin olive oil (VOO). The optimized extraction conditions for 20 g of VOO...
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