Fig. 6.From: Bioprocess development as a sustainable platform for eco-friendly alkaline phosphatase production: an approach towards crab shells waste management3D response surface representing ALP activity yield (U L−1 min−1) from B. licheniformis strain ALP3 as affected by culture conditions: a Interaction between crab shells powder and ZnSO4.7H2O. b Interaction between crab shells powder and CoCl2.6H2O. c Interaction between CoCl2.6H2O and ZnSO4.7H2OBack to article page