3.8. Effect of different nitrogen sources on phytase production
The medium supplemented with (0.25 g/5 g ds) of different nitrogen sources included organic and inorganic nitrogenous
compounds (Beef extract, yeast extract, peptone, baker yeast, ammonium phosphate, ammonium sulpfate, ammonium chloride,and urea). The results in Fig. 7 showed that the addition