Fig. 2

NaCl concentration effect on the recovery of MPs and PLA2 in PEG–potassium phosphate systems. A Principal component analysis (PCA) analysis of the recovery metalloproteases (MPs) and phospholipases A2 (PLA2) in selected systems at different NaCl concentrations (1, 3 and 5% w/w). Clear circles (○) denote the selected ATPS with the best partition characteristics. B SDS-PAGE of top and bottom phases (T and B, respectively) of selected ATPS from PCA analysis, 15 μg of C. m. nigrescens venom (CMNv) and molecular weight marker (MWM)