Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Back-Extraction Processes of C.C.Lipase with Mediated AOT Reverse Micellar System

  • Lee, Sung-Sik (Department of Chemical Engineering, Dong-A University) ;
  • Kim, Bong-Gyu (Department of Chemical Engineering, Dong-A University) ;
  • Sung, Nak-Chang (Department of Environmental Engineering, Dong-A University) ;
  • Lee, Jong-Pal (Department of Chemistry, Dong-A Univeristy)
  • Published : 2004.06.20
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Abstract

The relationship between the behaviors of c.c.lipase back-extraction and their percolation phenomena by using AOT reverse micellar systems (RVMS) has been studied by the addition of a small amount of additives to organic phase such as thiols and nonionic-surfactants focusing on micelle-micelle interactions. The values of ${\beta}_t$ defined by the variation of percolation processes and back-extraction behaviors of c.c.lipase have a good linear correlation. The hydrophobicity of additive molecules suppressing the cluster formation of reverse micelles (high values of ${\beta}_t$) improved the back-extraction behavior of c.c.lipase. The back-extraction fraction and its rate of c.c.clipase are increased with decreasing of the value of hydrophilic lipophilic balance (HLB) and increasing of the hydrophobicity per additive molecules added to reverse micellar systems (RVSM) in the same additives concentration.

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