title: Reverse phase high pressure liquid chromatographic determination of vitamin K1 in infant formulas.
abstract: A reverse phase high pressure liquid chromatographic (HPLC) method for quantitating vitamin K1 in enzymatic hydrolysates of infant formula is described. The vitamin is extracted with n-pentane before determination by isocratic and isothermal reverse phase HPLC. Recovery of vitamin K1 added to 5 infant formulas ranged from 84 to 103%.
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods; D006801:Humans; D007223:Infant; D007225:Infant Food / Q000032:analysis*; D010837:Vitamin K 1 / Q000032:analysis*
chemical_list: D010837:Vitamin K 1