title: Immobilization of pepsin on sand: preparation, characterization and application.
mesh_terms: D004800:Enzymes, Immobilized / Q000032:analysis*; D010316:Particle Size; D010434:Pepsin A / Q000032:analysis*; D012822:Silicon Dioxide
chemical_list: D004800:Enzymes, Immobilized; D012822:Silicon Dioxide; D010434:Pepsin A