| 摘要 |
A novel chondroitin sulfate which can be produced more economically in a lar ge amount and is expected as being useful for various purposes and processes fo r producing the same. Namely, a novel chondroitin sulfate which has an intermediate structure between the conventionally known whale-origin chondroitin sulfate and shark-origin chondroitin sulfate and is expected as useful for various purposes in the fields of drugs, cosmetics, food additive s, etc. A process for producing the above-described chondroitin sulfate compris es grinding salmon nasal cartilage at a low temperature, defatting the ground matter, then treating it with an alkali and pronase, centrifuging the thus obtained liquid digested matter and then precipitating it from ethanol; and another process wherein the precipitate thus obtained is further treated wit h a cation exchange resin.
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