DAO 67:177-179 (2005)  -  doi:10.3354/dao067177

Antimicrobial activity of chitosan against vibrios from freshwater prawn Macrobrachium rosenbergii larval rearing systems

A. Anas1, S. Paul1, N. S. Jayaprakash1,3, R. Philip2, I. S. Bright Singh1,*

1Centre for Fish Disease Diagnosis and Management (CFDDM), and 2Department of Marine Biology Microbiology andBiochemistry, Cochin University of Science and Technology (CUSAT), Kochi 682 016, Kerala, India
3Present address: Centre for Bioseparation Technology, Vellore Institute of Technology, Vellore 632 014, Tamil Nadu, India
*Corresponding author. Email:

ABSTRACT: Chitosan is a biocompatible and biodegradable natural polymer with established antimicrobial properties against specific microorganisms. The present study demonstrates its antibacterial activity against 48 isolates of Vibrio species from prawn larval rearing systems. The antibacterial activity had a positive correlation with the concentration of chitosan. This work opens up avenues for using chitosan as a prophylactic biopolymer for protecting prawn larvae from vibriosis.


KEY WORDS: Vibriosis · Chitosan · Macrobrachium rosenbergii · Antimicrobial


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