ウシ血清アルブミン多層吸着多孔性膜を用いたトリプトファンのキラル分離

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  • Chiral Separation of DL-Tryptophan Using Bovine-Serum-Albumin-Multilayered Porous Hollow-Fiber Membrane.
  • ウシ ケッセイ アルブミン タソウ キュウチャク タコウセイ マク オ モチイ

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A diethylamino (DEA) -group-containing polymer chain was grafted onto a porous polyethylene membrane in the form of a hollow fiber by radiation-induced graft polymerization of an epoxy-group-containing vinyl monomer (GMA), followed by a reaction of the epoxy group with diethylamine. Bovine serum albumin (BSA) was multilayered up to six layers by the permeation of a BSA solution through the pores of the DEA-group-containing porous membrane. A chromatogram of DL-tryptophan was obtainable by the injection of a racemic Trp solution into a BSA-multilayered membrane acting as a stationary phase. The selectivity coefficient, defined as the retention time ratio of L-Trp to D-Trp, increased with the degree of BSA multilayer binding, and remained constant irrespective of the flow rate of the mobile phase because of a negligible diffusional mass-transfer resistance.

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