This is the first published method for the determination of all 8 xanthophylls permitted in EU for feeding of laying hens and thus transfered to yolks, by isocratic separation of the analytes by high performance liquid chromatography. Among the investigated compounds figured xanthophylls naturally present in the feed or added, the permitted synthetic xanthophylls were included. The method is fast, simple and reliable.
COBISS.SI-ID: 5334042