Fish Freezing

DeVries: the Art of not freezing fish.

Lloyd Peck discusses the impact of two classic Science papers, the first by Art DeVries and Donald Wohlshlag, published in 1969 and the second by DeVries alone published in 1971 on freeze tolerance in Antarctic fish. Art DeVries transformed our understanding of low-temperature biology with two publications in 1969 and 1971. The first paper was with Donald Wohlshlag, an icon of low-temperature b...

Freezing / Thawing and Cooking of Fish

Freezing to Kill Nematode Parasites in Fish Products:

This recommendation for -20°C for 7 days is not in the plan at the URL cited. What the file PARASITE.HTM at that site shows is a portion of a HACCP plan relating to control of parasites, and the table shows in the Critical Limit column a recommendation to 'Freeze at 35°F for 15 hours'. This recommendation, as cited, contains a minor error compared with the FDA recommendation to be discussed bel...

Freezing resistance of antifreeze-deficient larval Antarctic fish.

Antarctic notothenioids, along with many other polar marine fishes, have evolved biological antifreeze proteins (AFPs) to survive in their icy environments. The larvae of Antarctic notothenioid fish hatch into the same frigid environment inhabited by the adults, suggesting that they must also be protected by sufficient AFPs, but this has never been verified. We have determined the contribution ...

Fish Myosin Aggregation as Affected by Freezing and Initial Physical State

Fish myosin obtained from Tilapia nilotica was solubilized in 20 mM Tris-HCl, pH 7.0, with 0.6 M KCl (solution model system), or suspended without salt (suspension model system). Changes in % soluble protein, Ca2 ATPase activity, and total and reactive -SH groups during frozen storage were evaluated. Frozen induced aggregation of fish myosin showed different behavior depending upon its initial ...