UTILIZATION OF PRAWN WASTE-ISOLATION OF CHITIN AND ITS CONVERSION TO CHITOSAN

Abstract

A process is described for the preparation of chitosan from
prawn waste. The process involves extraction of protein using
0.5% sodium hydroxide solution, bleaching the protein free
mass with bleach liquor containing 0.3-0.5% available chlorine
followed by demineralisation with 1.25 N hydrochloric acid in
the cold and deacetyiation using 1:1 (w jw) sodium hydroxide
solution at 100°C for 2 hours.