4Farooqahamed S K, Acharya B. Vishu K, Mandyam C. Chi- tooligosaccharides--preparation with the aid of pectinase isozyme from Aspergillus niger and their antibacterial activity[J]. Carbohy- drate Research, 2005,340:1239-1245.
5Khanafari A,Marandi R, Sanatei S. Recovery of chitin and chitosan from shrimp waste by chemical and microbial methods[J]. Iranian Journal of Environmental Health Science and Engineering,2008,5 (1):19-24.
6Limam Z,Selmi S, Sadok S, et al. Extraction and characterization of chitin and chitosan from crustacean by-products: biological and physico-chemicalproperties[J]. African Journal of Biotechnology,2011, 10(4):640-647.
7Benhabiles MS, Salah R, Lounici H, et al.Antibacterialactivity of- chitin,chitosan andits oligomers prepared from shrimp shell waste[J]. Food Hydrocolloids, 2012,29:45-56.
