Optimum Conditions for Preparation of Glucosamine Hydrochloride and Glucosamine Sulfate from Shrimp-Shell Chitin
Piyabutr Wanichpongpan, Shewin Attasat

Abstract
The shrimp processing industries produce a large quantity of wastes, such shrimp shell, and head, varying from 45 - 55% of the weight of raw shrimp. Therefore, it has been very useful to utilize these wastes into the valueadded byproducts. In this study, the optimum conditions for preparation of glucosamine by the hydrolysis of chitosan extracted from shrimp shell were determined. The conditions involve the ratio of mixture to hydrolysate for preparation of crude glucosamine hydrochloride, the ratio of ethanol to hydrolysate for preparation of crystalline glucosamine hydrochloride, and the optimum temperature and reaction time for preparation of glucosamine sulfate. Finally, the purity of the glucosamine sulfate was determined by Gas Chromatography-Mass Spectrometry analysis.

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