modification of chitosan test of campbell is suggested with a controlled procedure involving heating with saturated potassium hydroxide at 160 degrees c for a period of 45 min and subsequent washing of the deacetylated chitin in running water and application of lugol 's iodine solution ( 1:2:300 , w/w/v ) at a ph range of 1.4 to 4.0 , thus replacing the use of dilute sulphuric acid .
C0162969
chitosan
C0008141
chitin