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Slabs of manufactured ice at the Grimsby Ice Factory prior to being crushed, 1990. An icemaker, ice generator, or ice machine may refer to either a consumer device for making ice, found inside a home freezer; a stand-alone appliance for making ice, or an industrial machine for making ice on a large scale. The term "ice machine" usually refers ...
Freezer burn is a condition that occurs when frozen food has been damaged by dehydration and oxidation due to air reaching the food. [1] It is generally caused by food not being securely wrapped in air-tight packaging .
The freezing technique itself, just like the frozen food market, is developing to become faster, more efficient and more cost-effective. As demonstrated by Birdseye's work, faster freezing means smaller ice crystals and a better-preserved product. [8] Birdseye's original cryogenic freezing approach using immersion in liquid nitrogen is still ...
Ice cream was originally made using very intensive labor and it often took one individual hours to make. Johnson had invented the hand cranked ice cream churn as a way to make ice cream faster and easier than by hand. [4] The patent number for the Artificial Freezer is US3254A. [5] It was patented on September 9, 1843, and antedated on July 29 ...
An ultra low temperature (ULT) freezer is a refrigerator that stores contents at −80 to −86 °C (−112 to −123 °F). [1] An ultra low temperature freezer is commonly referred to as a "minus 80 freezer" or a "negative 80 freezer", referring to the most common temperature standard. [2] ULT freezers come in upright and chest freezer formats.
In practice, a mechanical freezing process is usually used instead due to cost. There has been continuous optimization of the freezing rate in mechanical freezing to minimize ice crystal size. [2] Flash freezing techniques are also used to freeze biological samples quickly so that large ice crystals cannot form and damage the sample. [5]