Size-Effects in the Separation of Bovine Serum Albumin through an Aqueous Polymer Two-Phase Systems on the Micron-Size Devices

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The effect of device-downsizing upon the continuous extraction of bovine serum albumin (BSA) in an aqueous two-phase system was studied. BSA molecules in the aqueous solution of polyethylene glycol (PEG) were partitioned into that of dextran (Dex) through μm- or mm-sized two-phase flow systems in circular capillary tubes. Mathematical model of BSA extraction kinetics was formulated with dimensionless forms. Four effects of device-downsizing were observed. First, downsizing enlarged the specific interfacial area between a PEG-rich solution and a Dex-rich solution, and in turn, elevated overall volumetric mass transfer rates of BSA in the PEG-rich phase and in the Dex-rich phase. Second, downsizing enlarged the proportion of the cross section of the PEG-rich solution, and in turn, elevated the space-time of the PEG-rich phase flow. Third, downsizing reduced the delay space-time of mass transfer of BSA into the Dex-rich solution. Finally, downsizing enlarged the range of overall volumetric mass transfer rates of BSA extraction. The diminution in size of two-phase flow separator towards micron-size was found to be effective to increase the level of overall volumetric mass transfer rates of BSA extraction.

収録刊行物

  • Journal of chemical engineering of Japan  

    Journal of chemical engineering of Japan 41(2), 114-120, 2008-02-01 

    The Society of Chemical Engineers, Japan

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各種コード

  • NII論文ID(NAID)
    10021109711
  • NII書誌ID(NCID)
    AA00709658
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00219592
  • NDL 記事登録ID
    9384037
  • NDL 雑誌分類
    ZP1(科学技術--化学・化学工業)
  • NDL 請求記号
    Z53-R395
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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