Carotenoprotein from shrimp waste was recovered by the method of Sila, Nasri, and Bougatef (2012), with slight modification. Ground shrimp wastes were blended with three volumes of 0.5 M EDTA, pH 8.0 (optimum for Alcalase® activity) using a waring blender. Alcalase® was added to the mixture at a level of 1000 U/g samples and shaken at 200 rpm in a shaking incubator (DAIHAN Labtech CO., Ltd.) at 50 °C (optimum for Alcalase® activity) for 2 h. After incubation, the mixture was filtered through several layers of cheesecloth, and the filtrate was adjusted to pH 4.5 with 2 M HCl. The precipitate was recovered by centrifugation at 5000g for 30 min at 4 °C using a refrigerated centrifuge (MED-instrument MPW-350 R). The pellet obtained was dissolved in 20 ml of cold 5 mM sodium phosphate buffer (pH 7). Samples were lyophilised and the dry matter was referred to as “carotenoprotein”.