Influence of airflow intensity on phytase production by solid-state fermentation

► Air flow intensity is analyzed and determined the best aeration condition for phytase production. ► Agitation was inefficient to help to remove CO2 and metabolic heat. ► Respirometric quotient (RQ) was established during the fermentation and kinetics parameters of were calculated. ► Metabolic heat evolution was described along the fermentation. ► Patterns of biomass and phytase production were similar at both scales.