3.5.5.5 immobilisation on poly(ethyleneimine/polyaldehyde)dextran stabilizes 718003 3.5.5.5 in citrate buffer, the activity of the enzyme increases with the increase in the pH (4.0-5.5), whereas in borate and carbonate buffers very little activity is observed 733546 3.5.5.5 significant stabilization by addition of 1 M ammonium sulfate 670163