[Characterization of an exo-chitinase from a Citrobacter strain isolated from the intestine content of large yellow croakers].

Objective: We isolated bacterial strains with chitin-degrading activity from the digesta of large yellow croakers (Pseudosciaena crocea) fed with chitin-enriched trash fish, and characterized potential chitinases thereof.

Methods: Chitin-degrading strains were screened with colloidal chitin agar from the digesta of P. crocea fed with trash fish.