Dosage colorimétrique du palmitate d'ascorbyle dans les matières grasses

Abstract - There was presented a method of colorimetric determination of ascorbyle palmitate in fatty materials based on a reaction with diazotized 4-methoxy-2-nitroaniline in acid medium, folloved by development of a blue colour in alcaline solution. This colour, with a maximum absorbancy at 570 mµ, is compared with standard solutions in photoelectric colorimeter. The sensibility of the procedure permits to determine very minute quantities of ascorbyle palmitate. The accuracy of the method was checked by means of statistical analysis.