title: Simultaneous analysis of Vitamins A and E in infant milk-based formulae by normal-phase high-performance liquid chromatography-diode array detection using a short narrow-bore column.
abstract: A rapid, simple and reproducible normal-phase (NP) high-performance liquid chromatography (HPLC)-diode array detection (DAD) method for simultaneous qualitative and quantitative determination of Vitamin A (retinol acetate and retinol palmitate) and Vitamin E (alpha-tocopherol acetate, alpha-, gamma- and delta-tocopherols) in milk-based infant formulae was developed and validated. The preparation sample was based on protein precipitation and vitamin extraction with ethanol, followed by re-extraction with hexane, while the chromatographic method was based on the use of a short narrow-bore column (50 mm x 2.1 mm; 3 microm particle size), which afforded less solvent consumption and higher mass sensitivity. The method showed acceptable values for precision, recovery and sensitivity, and proved very simple for routine analysis work.
authors.affiliation: Dpt. de Nutrició i Bromatologia, Centre de Referència en Tecnologia dels Aliments (CeRTA), Facultat de Farmàcia, Universitat de Barcelona, Avda. Joan XXIII s/n, E-08028 Barcelona, Spain.
authors.forename: Jorge L
authors.initials: JL
authors.lastname: Chávez-Servín
authors.forename: Ana I
authors.initials: AI
authors.lastname: Castellote
authors.forename: M Carmen
authors.initials: MC
authors.lastname: López-Sabater
mesh_terms: D000818:Animals; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004224:Diterpenes; D006801:Humans; D007223:Infant; D041943:Infant Formula / Q000737:chemistry*; D008892:Milk / Q000737:chemistry; D015203:Reproducibility of Results; D000084562:Retinyl Esters; D024505:Tocopherols / Q000032:analysis; D014801:Vitamin A / Q000031:analogs & derivatives / Q000032:analysis*; D014810:Vitamin E / Q000032:analysis*; D024502:alpha-Tocopherol / Q000031:analogs & derivatives / Q000032:analysis
chemical_list: D004224:Diterpenes; D000084562:Retinyl Esters; D014801:Vitamin A; D014810:Vitamin E; C014794:retinol palmitate; C009166:retinol acetate; D024502:alpha-Tocopherol; C479072:delta-tocopherol; D024505:Tocopherols