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전기방사를 이용하여 polyethersulfone (PES)-bovin albumin serum (BSA) 단백질 친화막을 제조하였으며, 이때 전기방사에 의한 공정상의 문제점을 용해도가 높고, 끓는점이 높은 2,2,3,4,4,4-Hexafluoro-1-butanol (HFB)를 공용매로 사용함으로써 해결하였다. 또한 공용매는 최적의 온도, 습도 범위를 확대시켜줌으로써 친화막의 대량 생산이 용이하리라 생각한다. 제조된 친화막은 biuret test를 통하여 친화막의 색깔이 무색에서 보라색으로 변함으로써 PES 섬유 내 BSA가 존재함을 확인할 수 있었다. 완충용액의 조성 성분 중 dimethyl sulfoxide (DMSO)는 세척과정에서 BSA와 L-tryptophan사이의 해리를 제어함으로써 용출과정에서 비교실험보다 약 5배의 높은 용출량을 보여주었다.
Protain affinity membranes based on PES-BSA was preapared by the electrospinning method. The process problem caused by the electrospining was solved by using HFB having high solubility and boiling point. It was expecting that the mass production of protein affinity membrane would be possible with broad range of optimized temperature and humidity. BSA in the PES nanofiber was confirmed by the color change from colorless to violet during the biuret test. The buffer solution with DMSO showed that the amount of elution was 5 times higher than the one when the buffer solution without DMSO was used. This is due to the restriction effect of DMSO on the dissociation of L-tryptophan from BSA during the washing step.
