The Application of Papain in Astaxanthin Extraction from Crayfish Shell

Abstract:

The aim of this study is to develop a astaxanthin extraction process from hydrolyzing the Crayfish shell by papain.For this,the optimal hydrolyzed conditions was determined by the single factor test and the central point experimental design and the optimum conditions as fellows: temperature 48.5,pH 5.8,E/S 2522U/g,hydrolyzed time 63 min,L/S 2:1.A higher carotenoids amount and density achieved at 115.761μg.g-1 and 13.06%,respectively.The amount was higher 13.8% than that of the amount extracted by acid treatment The results presented here provided a new technology process for comprehensive utilization of shrimp waste.