3.4.23.20	-	
3.4.23.20	aqueous two-phase system system using 9% (w/v) PEG 8000, 5.2% (w/v) NaCl, and 15.9% (w/v) sodium citrate	
3.4.23.20	penicillopepsin-JT1 to homogeneity	
3.4.23.20	penicillopepsin-JT2	
3.4.23.20	recombinant enzyme	
3.4.23.20	using magnetite nanoparticles with azocasein immobilized