Fig. 6From: Purification and characterizations of a novel recombinant Bacillus velezensis endoglucanase by aqueous two-phase systemEffect of PEG 4000, NaCl concentration, and pH on purification of endoglucanase from supernatants of pET21-egls/DE3 cells. PF purification factors, K partition coefficient, ER enzyme recovery. a PEG 4000 (10–25%, w/w); b K2HPO4/NaH2PO4 (4–10%, w/w); c pH (6.0–8.0); d NaCl (0–15%, w/w)Back to article page