Fig. 7

Monitoring of B. licheniformis strain ALP3 growth and ALP productivity in (a) A shake-flask scale cultivation condition. b Scanning Electron Microscope (SEM) micrograph of B. licheniformis strain ALP3 during lag phase, log phase, and stationary showing the morphology of the cell during the growth and crab shells particles. c Bacterial culture growth of B. licheniformis strain ALP3 at zero incubation time. d Bacterial culture growth of B. licheniformis strain ALP3 at the end of the fermentation process. e Particle size distributions analysis of crab shells particles at zero incubation time. f Particle size distributions analysis of crab shells particles at the end of the fermentation process