Electromembrane Peptide Extraction

A research group at the University of Oslo (Oslo, Norway) developed a method for electromembrane extraction of eight peptides from an aqueous acidic solution using a thin supported liquid membrane in a porous hollow fiber. The peptides were induced to migrate through the membrane and into an aqueous acidic acceptor solution inside the fiber by a 50-V potential applied across the membrane. Peptide recoveries varied according to peptide structure. Peptide polarity and number of ionized groups also affected extraction efficiency.