Effect of Fe3O4 on the Bioactivity of Immobilized Cells of Monascus purpureus
Fe3O4/chitosan composite was developed as a new type of cell carrier to be used in red pigment fermentation. The presence of the Fe3O4 particles in chitosan composite not only improved the yield of red pigment, but also enhanced the biomass attached on the composite. The Fe3O4/chitosan composite was found to be more effective for immobilization of Monascus purpureus than chitosan particles. Red pigment of 2.24 UA510 was obtained using Fe3O4/chitosan composite cultures in liquid fermentation. The biomass attached on Fe3O4/chitosan composite reached to 264 mg dry wt. cells/g carrier.
F. Q. Zhang et al., "Effect of Fe3O4 on the Bioactivity of Immobilized Cells of Monascus purpureus", Advanced Materials Research, Vol. 590, pp. 106-110, 2012