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00925njm 22002777a 4500 dc Torrecilla Velasco, José Santiago author Domínguez Toribio, Juan Carlos author Rodríguez Somolinos, Francisco author Rojo Recio, Ester author 2010 A simple and novel method to quantify adulterations of extra virgin olive oil (EVOO) with refined olive oil (ROO) and refined olive−pomace oil (ROPO) is described here. This method consists of calculating chaotic parameters (Lyapunov exponent, autocorrelation coefficients, and two fractal dimensions, CPs) from UV−vis scans of adulterated EVOO samples. These parameters have been successfully linearly correlated with the ROO or ROPO concentrations in 396 EVOO adulterated samples. By an external validation process, when the adulterating agent concentration is less than 10%, the integrated CPs/UV−vis model estimates the adulterant agent concentration with a mean correlation coefficient (estimated versus real concentration of low grade olive oil) greater than 0.97 and a mean square error of less than 1%. In light of these results, this detector is suitable not only to detect adulterations but also to measure impurities when, for instance, a higher grade olive oil is transferred to another storage tank in which lower grade olive oil was stored that had not been adequately cleaned. A Novel Method To Quantify the Adulteration of Extra Virgin Olive Oil with Low-Grade Olive Oils by UV−Vis José S. Torrecilla, Ester Rojo, Juan C. Domínguez, and Francisco Rodríguez Journal of Agricultural and Food Chemistry 2010 58 (3), 1679-1684 DOI: 10.1021/jf903308u 10.1021/jf903308u https://hdl.handle.net/20.500.14352/137788 https://doi.org/10.1021/jf903308u https://pubs.acs.org/doi/10.1021/jf903308u A Novel Method To Quantify the Adulteration of Extra Virgin Olive Oil with Low-Grade Olive Oils by UV-Vis