“…Highly active proteolytic enzymes acting on alimentary proteins have been reported in many marine species (Celis-Guerrero, Garcìa-Carreño, & Navarrete del Toro, 2004;Muhlia-Almazán, Sánchez-Paz, & García-Carreño, 2008;Wu, Jiang, Xiang, Yang, & Wang, 2008). Proteolytic enzymes in the digestive organs of crustaceans have been well documented and characterized (Dall & Moriarty, 1983;Galgani & Nagayama, 1987;Fang & Lee, 1992;Garcìa-Carreño, 1992;Garcìa-Carreño, Hernandez-Cortes, & Haard, 1994;Glass & Stark, 1994;Jones, Kumlu, Le Vay, & Fletcher, 1997;Navarrete del Toro, García-Carreño, Díaz, Celis-Guerrero, & Saborowski, 2006). Marine decapod crustaceans synthesize a wide range of highly active proteolytic enzymes in the digestive gland: endopeptidases (trypsin and chymotrypsin) and exopeptidases (carboxypeptidases and aminopeptidases).…”