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UV light can make fruits germ free
Ultraviolet C (UVC) light can kill food borne pathogens on the surface of certain fruits, a study led by an Indian-origin scientist at Washington State University shows. \"UVC radiation is present in sunlight. It has germicidal properties and can be effective against bacteria, mould and viruses. However, it is completely absorbed by the ozone layer and earth\'s atmosphere,\" said Shyam Sablani, lead researcher and food safety specialist.
New York: Ultraviolet C (UVC) light can kill food borne pathogens on the surface of certain fruits, a study led by an Indian-origin scientist at Washington State University shows. "UVC radiation is present in sunlight. It has germicidal properties and can be effective against bacteria, mould and viruses. However, it is completely absorbed by the ozone layer and earth's atmosphere," said Shyam Sablani, lead researcher and food safety specialist.
After learning from organic farmers and food processors about a lack of sanitising options, Sablani and his colleagues decided to explore UVC light. It has a shorter wavelength than ultraviolet A or B light.UVC light, which cannot penetrate opaque, solid objects, can be effective in sanitising surfaces.
The technology, which has been around for several years, has been used to effectively sanitise food contact surfaces as well as drinking water and contaminated air. It works on micro-organisms by destroying nucleic acid and disrupting their DNA. But the light did not affect the chemical or physical quality of the fruit in the study.
