マダコの筋たん白質に関する研究

概要

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A comparative study on the muscle proteins of fresh octopus caught off Misaki, Kanagawa Prefecture and frozen ones caught off Africa was made with special reference to the mantle and the arms. The aqueous extract of the arms showed a flow birefringence, while that of the mantle did not. Also, the aqueous extracts of the arms and the mantle showed different electro-phoretic and ultracentrifugal patterns. From results of the salting-out analysis of the arm-extracts, it is suggested that the fastest peak in the ultracentrifugal pattern might be re-sponsible for the flow birefringence. The presence of a similar flow-birefringent protein has been also recognized in the aqueous extract of the squid arms.4) In the ultracentrifugal patterns of the salt (0.6M KCI) extracts, the three small peaks were assigned as actomyosin or like proteins, and they became smaller in the extracts of the frozen muscle suggesting the occurrence of denaturation during frozen storage. The muscle protein was found to be composed of 20-21% albumin, 68-70% actomyosin (globulins), and 10-11% stroma.
社団法人日本水産学会の論文