| 摘要 |
PURPOSE:To obtain tuna meat which can be thawed or rethawed without causing change in color of lean meat, reduction in quality and dripping, by cutting tuna meat into a specific size, bringing the neat through a water-permeable semipermeable membrane into contact with a water-absorbing material so that the tuna meat is dehydrated. CONSTITUTION:For example, frozen tuna is cut into a given size, the cut tuna meat is optionally thawed completely and brought into contact with a dehydrating sheet which is obtained by sandwiching a water-absorbing material consisting of a high polymer water-absorbing agent (e.g. one obtained by grafting water-soluble monomer such as acrylamide, etc., onto polysaccharide such as starch, etc.) 2 alone or of the high polymer water absorbing agent 2 and a hydrophilic paste agent 5 made of a highly osmotic pressure substance (e.g. CMC) 3 and/or a hydrophilic alcohol (e.g. ethyl alcohol) 4 in between water-permeable semipermeable membranes 1 such as collodion membrane, etc., and sealing the peripheral edge by fusing to dehydrate the tuna meat and to reduce water content.
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