Production of Chitin and Chitosan from Partially Autolyzed Shrimp Shell Materials

Table 1: Ash and Protein Content of Chitin

Sample	Ash Content^* (%)		Protein Content^** (%)
Sample	Fresh	Frozen	Fresh	Frozen
Chitin 0	0.67 ± 0.02	0.40 ± 0.05	0.83 ± 0.16	0.65 ± 0.08
Chitin 1	0.61 ± 0.16	0.51 ± 0.04	0.78 ± 0.06	0.58 ± 0.05
Chitin 2	0.67 ± 0.11	0.41 ± 0.04	0.84 ± 0.12	0.48 ± 0.04
Chitin 3	0.71 ± 0.06	0.53 ± 0.04	0.55 ± 0.06	0.45 ± 0.04
Chitin 4	0.77 ± 0.02	0.97 ± 0.04	0.61 ± 0.01	0.41 ± 0.06

Chitin/chitosan 0, 1,2,3,4 indicates 0, 1,2,3,4 days of shrimp shell autolysis.

^* The ash content of the original shells was 24.5% (db).

^** The protein content of the original shell was 23.5% (db).