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One of the main advantages of this method of preparing frozen food is that the freezing process takes only a few minutes. The exact time depends on the type of IQF freezer and the product. The short freezing prevents formation of large ice crystals in the product's cells, which destroys the membrane structures at the molecular level.
Portions cut from frozen Alaska pollock fillet blocks are the most common choice for fast food restaurant fish sandwiches, for example in the McDonald's Filet-O-Fish. Alaska pollock is also a common raw material used in the manufacture of surimi (fish paste). Alaska pollock is widely regarded as one of the best proteins for the manufacture of ...
Tunnel freezing is a variant of air-blast freezing where food is put onto trolley racks and sent into a tunnel where cold air is continuously circulated. Fluidized bed freezing is a variant of air-blast freezing where pelletized food is blown by fast-moving cold air from below, forming a fluidized bed. The small size of the food combined with ...
In 1922, he formed "Birdseye Seafood, Inc.", to freeze fish fillets with chilled air at −45 °F (−43 °C). In 1924, he developed an entirely new process for commercially viable quick-freezing: packing fish in cartons, then freezing the contents between two refrigerated surfaces under pressure.
Arrange in an even layer on lined baking sheets, leaving enough room for cold air to circulate, then freeze until firm; transfer the frozen pears to freezer bags for longer storage.
A freezer trawler fully processes the catch on board to customers’ specifications, into frozen-at-sea fillet, block or head and gutted form. Factory freezer trawlers can run to 60 to 70 meters in length and go to sea for six weeks at a time with a crew of over 35 people. They process fish into fillets within hours of being caught.
Special cut fillets are taken from solid large blocks; these include a "natural" cut fillet, wedge, rhombus or tail shape. Fillets may be skinless or have skin on; pinbones may or may not be removed. [4] A fletch is a large boneless fillet of halibut, swordfish or tuna. [4] There are several ways to cut a fish fillet:
Flash freezing being used for cryopreservation. Flash freezing is used in the food industry to quickly freeze perishable food items (see frozen food). In this case, food items are subjected to temperatures well below [clarification needed] the freezing point of water. Thus, smaller ice crystals are formed, causing less damage to cell membranes. [4]