title: Routine assay for determination of alpha-tocopherol in liver.
abstract: A rapid and accurate procedure for determination of alpha-tocopherol in liver has been developed. Extracts of saponified liver homogenates were purified by a simple and efficient chromatography step on Kieselgel. alpha-Tocopherol content of the purified extracts was determined by an automated gas--liquid chromatographic assay of the trimethylsilyl derivatives. Mean recovery for alpha-tocopherol added in vitro was 95.4 +/- 1.2% (SEM, 149 estimations). The lower assay limit was ca. 0.5 micrograms alpha-tocopherol/g liver. An experienced analyst was able to process at least 12 chick, rat, or geuinea pig livers per day.
mesh_terms: D000818:Animals; D002645:Chickens; D002849:Chromatography, Gas; D002851:Chromatography, High Pressure Liquid; D006168:Guinea Pigs; D008099:Liver / Q000032:analysis*; D051381:Rats; D014810:Vitamin E / Q000032:analysis*
chemical_list: D014810:Vitamin E