Using colloidal chitin as the sole carbon source,a marine bacteria with high productivity of cold-adapted chitinase was obtained from samples collected in Bohai bay in Dalian city of Liaoning Province,China,named as DL-06.According to its physiological,biochemical characteristics and 16 S rDNA sequence,it was identified as Pseudoalteromonas sp.DL-06.The chitinase activity was9.184U/mL by 30hshake-flask fermentation.The highest activity of chitinase was at 15 ℃,the chitinase still showed more than 50%of its ...