Preparation of chitosan
Fresh shrimp was collected from local market.
Shrimp head and skin was separated from shrimp
using sharp knife. The collected shrimp wastes
were then washed with tap water and crushed with
mortar pastle. Crushed shrimp waste was kept in a
polyethylene bags at ambient temperature (28±2oC)
for 24 hours for partial autolysis to facilitate chemical
extraction of chitosan and to improve the quality of
chitosan (Toan, 2009). Then isolation of chitosan
was carried out using the following 3 (three) steps,
namely Demineralization, Deproteinization and
Deacetylation.