Material Enzyme Source References Cellulose materials Cellulose RutC-30 40 Chitin Chitinase Actinobacteria 16 Keratin Keratinase Chysosporium keratinophilum 17 Sewage sludge muramidase β a2cillusstearotherm ophilus 44 Starch materials Amylase Bacillus licheniformis 40 Protein Protease Raoultella 29 Fat Lipase P. restrictum 33

Table 1: Enzymes with enhancement in the hydrolysis of sludge microbial hydrolases.