凍結貯蔵中における魚類筋原繊維タンパク質の変性と水の存在状態に及ぼす甲殻類および頭足類由来キチンの影響

書誌事項

タイトル別名
  • Effect of Chitin Isolated from Crustaceans and Cephalopods on Denaturation of Fish Myofibrillar Protein and the State of Water during Frozen Storage
  • トウケツ チョゾウ チュウ ニ オケル ギョルイキン ゲン センイ タンパクシ

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説明

From the point of view of utilization of shells as a waste product of fishery industry, the cryoprotective effect of chitin made from shell of crustaceans (Japanese fan lobster and Japanese swimming crab) and cartilage of cephalopods (spear squid) are studied. Chitin from the shells and cartilage were added to lizard fish myofibrils, and the changes of unfrozen water in myofibrils and ATPase activity of myofibrillar protein were observed during frozen storage at -250°C for 120days.<br>The amount of unfrozen water were increased by addition of three kinds of chitin, and decreased moderately during forzen storage. Whereas, in the chitin free sample, the amount of unfrozen water were decreased rapidly during frozen storage. Changes of ATPase activity of samples showed similar tendency to that of the amount of unfrozen water.<br> The present moderate cryoprotective effect of chitin and data of unfrozen water and ATPase activity of myofibrillar protein suggest the importance of the amount of unfrozen water in frozen matrix.

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