Quality of used frying fats and oils: comparison of rapid ...
16-03-2007· Thus, rapid and simple methods are necessary to evaluate the quality of frying oils in fried food outlets. In this study, rapid tests based on chemical reactions (Fritest and Oxifritest) and on physical properties (Viscofrit and food oil sensor) have been evaluated in a set of 105 used frying oils as alternative methods to the determination of polar compounds.