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The international Radura logo, used to show a food has been treated with ionizing radiation. A portable, trailer-mounted food irradiation machine, c. 1968 Food irradiation (sometimes American English: radurization; British English: radurisation) is the process of exposing food and food packaging to ionizing radiation, such as from gamma rays, x-rays, or electron beams.
The food is first prepared, either raw or cooked, and then sealed into the retort pouch. The pouch is then heated to 240-250 °F (116-121 °C) for several minutes under high pressure inside a retort or autoclave machine. The food inside is cooked in a similar way to pressure cooking.
Gamma-ray image of a shipping container showing two stowaways hidden inside Gamma-ray image of a truck showing goods inside a shipping container A truck entering a gamma-ray radiography system. Gamma-ray radiography systems capable of scanning trucks usually use cobalt-60 or caesium-137 [6] as a radioactive source and a vertical tower of gamma ...
This led to the consideration of the use of gamma radiation as a food preservative, and Anellis began research on the radiation resistance of bacteria in canned foods. In 1963 the Food and Container Institute was closed and its operations were moved to the U.S. Army Natick Research and Development Laboratories in Natick, Massachusetts. Anellis ...
In food preservation, radiation is used to stop the sprouting of root crops after harvesting, to kill parasites and pests, and to control the ripening of stored fruit and vegetables. Food irradiation usually uses beta-decaying nuclides with strong gamma emissions like cobalt-60 or caesium-137.
It has a white hue and is faintly visible to the naked eye at night with an apparent visual magnitude of 5.4. [2] The distance to Gamma 2 Fornacis is approximately 520 light years based on parallax. [1] It is drifting further away with a radial velocity of 24 km/s. [6] Gamma 1 Fornacis is a 6th magnitude star about four degrees to the north. [11]