Conformational Change in Actomyosin from Post‐spawned Hake Stored on Ice

The changes that lead to a decrease in the viscosity of actomyosin of post‐spawned hake stored on ice were investigated. Surface hydro‐phobicity of actomyosin from hake increased significantly in the first 3 days of storage. Compared with that stored 3 days, the viscosity of actomyosin from day 0 was greater and its changes suggested greater hydrophylic surface area. Electron microscopy showed changes in the filamentous structure of actomyosin during ice storage. Actomyosin from hake stored in ice is hypothesized to undergo conformational changes including exposure of hydrophobic groups resulting in drastic changes in hydrodynamic properties and a loss of the characteristic arrowhead structure of fresh acotmysin.