This document specifies a method for the determination of vitamin B6 in foodstuffs by high performance liquid chromatography (HPLC).
Vitamin B6 is the mass fraction of the sum of pyridoxine, pyridoxal, pyridoxamine including their phosphorylated derivatives as well as the b-glycosylated forms that have been added to foodstuffs, calculated as pyridoxine.
This method has been successfully validated with semolina with milk (infant food), potato puree, vegetables with ham (convenient products) and a multi vitamin drink at levels from 0,034 mg/100 g to 1,21 mg/100 g.