Possesses chitinase activity in vitro toward glycol chitin, carboxymethyl-chitin, colloidal chitin, and the chitin oligosaccharides (N-acetylglucosamine) (GlcNAc)6 and (GlcNAc)5 (PubMed:27383628). Hydrolyzes (GlcNAc)6 into (GlcNAc)4 and (GlcNAc)2, or two (GlcNAc)3 molecules (PubMed:27383628). Has the capacity to inhibit hyphal growth of the fungus Trichoderma viride in an agar-plate bioassay (PubMed:27383628). Random endo-hydrolysis of N-acetyl-beta-D-glucosaminide (1->4)-beta-linkages in chitin and chitodextrins. Glycan degradation; chitin degradation. Belongs to the glycosyl hydrolase 18 family. Chitinase class V subfamily.