Figure 3From: The dynamic regulation of nitrogen and phosphorus in the early phase of fermentation improves the erythromycin production by recombinant Saccharopolyspora erythraea strainEffects of feeding potassium dihydrogen phosphate on the fermentation process of ZL1004 strain. Mode 3: the solution of potassium dihydrogen phosphate (10 g/L) was fed at the rate of 10 g/h. Mode 4: the solution of potassium dihydrogen phosphate (10 g/L) was fed at the rate of 20 g/h. (A) Soluble phosphate. (B) Amino nitrogen.Back to article page