Effect of Serine Protease Inhibitor on the Setting of Alaska Pollack Surimi Paste.

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  • スケトウダラ塩すり身の坐りに及ぼすセリンプロテアーゼ阻害剤の影響
  • スケトウダラエン スリミ ノ スワリ ニ オヨボス セリンプロテアーゼ ソガイ

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Abstract

By the elongation of setting Alaska pollack surimi paste at 30°C, the breaking force of resulting gel was slowly decreased after a rapid increase. The protein component having a molecular weight of 150K (150kDa component) was increased with the concomitant decrease of myosin heavy chain. The decrement of the breaking force and the increment of the 150kDa component were partially suppressed by the addition of 0.1% wt of serine protease inhibitors, such as phenylmethylsulfonyl fluoride, p-toluenesulfonyl-L-phenylalanine chloromethyl ketone, soybean trypsin inhibitor, and ovomucoid, to the paste, but enhanced by the addition of extract from the paste with 0.6M NaCl. Furthemore, the increment of the 150kDa component, was not observed when the paste was heated at 80 or 90°C. Therefore, there is a possibility that coexisting serine protease acts on muscle protein duing setting the pste.

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