Kinetic study of biosurfactant production by Bacillus subtilis LAMI005 grown in clarified cashew apple juice

► Biosurfactant production by Bacillus subtilis LAMI005. ► Use of clarified cashew apple juice as low cost culture medium. ► Influence of medium supplementation on biosurfactant production. ► Critical micelle concentration (CMC) of surfactin produced by B. subtilis LAMI005 at this work ranged from 10.24 to 63 mg/L. ► Infrared spectrum of the B. subitilis LAMI005 biosurfactant indicates that surfactin was produced.