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How blue LEDs can preserve food
Highlights
Blue light emitting diodes (LEDs) have strong antibacterial effect on major food-borne pathogens and can thus help in food preservation, says a study. The LEDs are most effective when in cold temperatures (between 4 degrees Celsius and 15 degrees Celsius) and mildly acidic conditions of around pH 4.5, the study by a team of scientists from the National University of Singapore (NUS) said.
Singapore: Blue light emitting diodes (LEDs) have strong antibacterial effect on major food-borne pathogens and can thus help in food preservation, says a study. The LEDs are most effective when in cold temperatures (between 4 degrees Celsius and 15 degrees Celsius) and mildly acidic conditions of around pH 4.5, the study by a team of scientists from the National University of Singapore (NUS) said.
This opens up possibilities of using blue LEDs as a chemical-free food preservation method. Acidic foods such as fresh-cut fruits and ready-to-eat meat can be preserved under blue LEDs in combination with chilling temperatures without requiring further chemical treatments that are commonly needed for food preservation.
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