Optimization on Solid Fermentation Media of Hypocrellin

Abstract:

Maize was selected as the fermentation substrate,the pigment production conditions were optimized,and the optimized medium composition were:maize grits(particle size 0.78 ～0.95 mm) 90%,straw powder 10 %(dry solid),glucose 5%,NH4 Cl 1%,CuSO4 0.50%,CaCl2 0.10%,KH2 PO4 0.05%,K2 HPO4 0.10%,MgSO4 0.20%.Initial strains age was 24 hour,inoculation amount of beads was 2 mL/30 g dry solid,moisture content was 50%,the optimun temperature was 30° C.Under these conditions,the pigments yield could reach 1.66%.