The invention discloses a method for extracting crude polysaccharide from waste internal organs of sea worms, which belongs to the field of recycling of agricultural waste and particularly relates to a method for extracting crude polysaccharide from waste internal organs of sea worms. The invention provides a method for extracting crude polysaccharide from waste internal organs of sea worms, which is simple in operation, high in yield and high in product activity. In the invention, crude polysaccharide is obtained by using waste organs of sea worms as raw materials and by impurity removing, crushing, defatting, enzymolysis, deproteinization, precipitating and freeze-drying.
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