From: Enhancement of Surfactin yield by improving the medium composition and fermentation process
Cooper medium | Modified after Cooper | Further optimized | |
---|---|---|---|
A | B | C | |
C | 40 g/L glucose | 40 g/L glucose | 8 g/L glucose |
N | 50 mM NH4NO3 | 100 mM NH4Cl | 50 mM (NH4)2SO4 |
Mg | 0.8 mM MgSO4 | 0.8 mM MgSO4 | 0.8 mM MgSO4 |
Buffer | 30 mM KH2PO4 | 30 mM KH2PO4 | 30 mM KH2PO4 |
40 mM Na2HPO4 | 40 mM Na2HPO4 | 40 mM Na2HPO4 | |
Trace elements | 0.004 mM Na2EDTA | 0.004 mM Na2EDTA | 0.008 mM Na3citrate |
0.007 mM CaCl2 | 0.007 mM CaCl2 | 0.007 mM CaCl2 | |
0.004 mM FeSO4 | 0.004 mM FeSO4 | 0.004 mM FeSO4 | |
0.001 mM MnSO4 | 0.001 mM MnSO4 | 0.001 mM MnSO4 |