Fig. 2From: Efficient D-allulose synthesis under acidic conditions by auto-inducing expression of the tandem D-allulose 3-epimerase genes in Bacillus subtilisThe equilibrium time for synthesis of D-allulose by purified DPEases and co-expression of DPEases in one cell. The time required for A DSDPEase and B RCDPEase to reach reaction equilibrium under different conditions. 100Â g/L D-fructose was used as the substrate to synthesize D-allulose. C Enzyme activity of strains SDS, SRC, SDS-RC, SRC-DSBack to article page