4. Conclusion
In this study, for the first time OPEFB was converted to PHB
using a B. megaterium strain. PHB content and production reached
58.5% and 9.32 g/L for 45 g/L OPEFB sugars. These reached 51.6%
and 12.48 g/L for 60 g/L OPEFB derived sugars. The PHB titer of
12.48 g/L and productivity of 0.260 g/L/h obtained in this study
were the highest so far for lignocellulosic biomass to PHB. No
detoxification was required prior to OPEFB hydrolysate conversion.
OPEFB is therefore a feasible feedstock for low-cost PHB production
and B. megaterium R11 is a potential cell factory to accomplish it.