Analysis of major caprine milk proteins by reverse-phase high-performance liquid chromatography and electrospray ionization-mass spectrometry

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    Abstract

    Major proteins from caprine milk were separated by preparative gel permeation and cation-exchange fast protein liquid chromatography and were characterized by flow injection analysis by electrospray ionization mass spectrometry. In addition, proteins from whole skim milk and whole casein were analyzed by coupling reverse-phase HPLC and electrospray ionization mass spectrometry by two different Chromatographic methods. These methods successfully resolved the major caprine milk proteins and main casein variants. The experimental molecular masses of major milk proteins and variants were: 19,302 for κ-CN 2P; 25,599 for αs2-CN A-11P; 25,514 for αs2-CN B-10P; 23,370 for αs1-CN A-8P; 23,345 for γs1-CN B-8P; 23,264 for αs1-CN E-8P; 18,817 for αs1-CN F-3P; 23,835 for β-CN 6P; 18,181 for β-LG; 14,180 for α-LA and 66,318 for serum albumin.
    Original languageEnglish
    Pages (from-to)11-19
    JournalJournal of Dairy Science
    Volume83
    Issue number1
    DOIs
    Publication statusPublished - 1 Jan 2000

    Keywords

    • Caprine milk proteins
    • Electrospray source
    • Mass espectrometry

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