Use of fishing and textile industry residues in the production of chitinases by Aspergillus niveus in submerged and solid-state fermentation Pedro Henrique de Oliveira Ornela, Luís Henrique Souza Guimarães

Abstract

The use of industrial waste for production of value-added products is of great interest, as these are discarded in the environment, polluting it. Among these products, chitinases, which have ability to cleave chitin, stand out in terms of their biotechnological application. In this context, the fungus A. niveus was able to produce chitinases using residues from the fishing and textile industry in submerged (SbmF) and in solid-state fermentation (SSF). The residues of gray shrimp and silkworm chrysalis provided the highest chitinases production in SbmF (0.14 U mL^-1) and SSF (6.51 U g^-1 of substrate), respectively, after 96 h of cultivation. Thus, the potential of using industrial residues in the production of chitinases was demonstrated, reducing the environmental impact they would cause.