I'm facing difficulties in the partial purification of cellulase enzymes.
I used 2% CMC broth as a production medium, and after the separation of the pallet crud enzyme was saturated with ammonium sulfate. I have found crystal pallets with up to 40% saturation but in a further fraction beyond 40%, I have found viscous precipitate with little activity.
So, more than 40% ammonium sulfate saturation can be achieved by using 2% CMC Sodium Salt as a production medium?