Développements analytiques pour l’évaluation de la teneur en phytostérols des aliments : approche inter-laboratoires

Institut National de la Recherche Agronomique. Met@risk, 16 rue Claude Bernard. 75231 Paris cedex 05

^* feinberg@inapg.inra.fr

Abstract

A set of collaborative studies was carried out on 6 food items in order to determine their contents phytosterols. The interest of these studies is to make it possible to calculate a certain number of figures of merit for methods known as of reference methods. Finally, the calculation of the function of uncertainty for these methods shows that uncertainty remains high, especially for the weak concentrations, and that it must have a substantial influence on the evaluation of phytostérols intake. Similarly, it can be concluded that the analysis of phytosterols in foods remains a delicate operation which would deserve more attention from standardization bodies, especially in the current context of supplementation of certain foods.