| 摘要 |
A remedy for the treatment of tumours is obtained by the extraction of whole shell fish, crustaceans or fishes (e.g. herring, haddock and cod fish) with water or with a neutral organic solvent miscible with water in the presence of water, in particular with aqueous alcohol or acetone, the extract being freed from protein and after purification if necessary concentrated by removal of solvent. Mussels are a convenient raw material; oysters, crayfish and lobsters and creatures of the orders of echinoderms and coelenterates are also available. The crude extract may be purified by shaking with ether and from the watery residue the active substance may be precipitated by the addition of anhydrous alcohol or acetone. The substance may be further purified by treatment of an aqueous solution with an oxidizing agent, e.g. potassium permanganate or hydrogen peroxide. The material may also be purified by adsorption, e.g. in active charcoal.
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