ACKNOWLEDGMENT
We thank Dr. K. G. Ramachandran Nair, Central Institute of Fisheries Technology, Kochi, India, for providing the sample of chitosan. The financial assistance to the laboratory by the All India Council for Technical Education (AICTE), New Delhi, India, is gratefully acknowledged. M. N. V. R. K. is grateful to the Council of Scientific and Industrial Research (CSIR, New Delhi) for the award of a Senior Research Fellowship.