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  • Title: Quantitative analysis of phylloquinone (vitamin K1) in soy bean oils by high-performance liquid chromatography.
    Author: Zonta F, Stancher B.
    Journal: J Chromatogr; 1985 Jul 19; 329(2):257-63. PubMed ID: 4030976.
    Abstract:
    A high-performance liquid chromatographic method for determining phylloquinone (vitamin K1) in soy bean oils is described. Resolution of vitamin K1 from interfering peaks of the matrix was obtained after enzymatic digestion, extraction and liquid-solid chromatography on alumina. An isocratic reversed-phase chromatography with UV detection was used in the final stage. The quantitation was carried out by the standard addition method, and the recovery of the whole procedure was 88.2%.
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