METHOD OF CAFFEINE,QUININE,SORBIC ACID AND BENZOID ACID DETERMINATION IN COMESTIBLES

摘要

The solution enables to detect presence and concentration of caffeine, quinine, sorbic acid and benzoic acid in food products, especially in non-alcoholic beverages and wines. Its principle lies in the fact that the observed substances are separated with the use of the phase with the composition of methanol : water in the ratio of 2 : 8, containing 10-milimolar NaClO4 and 5-milimolar tetrabutylammoniumhydrogensulfate on the liquid chromatograph on the columns with the reverse phase by the isocratic process. The method can be utilized in the control of quality of food-products and keeping of technical and special norms in food industry.