Bioethanol production from carob pods by solid-state fermentation with Zymomonas mobilis

► Zymomonas mobilis was used for production of bioethanol from carob pod particles by solid-state fermentation. ► Wheat bran particles were mixed with carob pods as filler and support for bacterial growth. ► Plackett-Burman design and response surface methodology was used to optimise the conditions for maximum ethanol production.