Method for comprehensively using viscera of sea cucumber

The invention relates to a method for comprehensively using viscera of a sea cucumber, particularly relates to a method for extracting sea cucumber polysaccharide and sea cucumber polypeptide from the viscera of the sea cucumber through a biological enzymolysis technology and a membrane separation technology. The method comprises the following main steps of: 1, pre-treatment; 2, alkali extraction; 3, enzymolysis, 4, centrifugal separation; 5, microfiltration membrane impurity removal; 6, nonefiltration membrane concentration; 7, ethanol precipitation; 8, centrifugal separation; and 9, drying for obtaining sea cucumber polysaccharide and sea cucumber polypeptide respectively. The technical scheme provided by the invention is simple and easy in process and is applicable to industrial production. The extraction rate of protein and total sugar which are contained in viscera of sea cucumber can reach 60-70%. The effective active ingredients in the target products have higher contents. Furthermore, no residual solvent exists, and the security is high.