Blue LEDs help keep food fresh for longer


Blue LED

In a study conducted by a team of scientists from the University of Singapore, it was found that the light from blue LEDs has antibacterial properties, and in combination with cooling, it makes unnecessary preservatives, which are oversaturated food.

Scientists are sure that their discovery will be in demand especially in fast food chains, since in the products they offer potential customers scares off a large number of food additives of dubious content.

As shown by experiments, the greatest effect is given by a combination of blue light with a cool temperature of +4 – +15 ° C, as well as with an acidic environment, characteristic, for example, for freshly cut fruits. It turns out that bacterial cells contain light-sensitive compounds that absorb light in the visible region of the electromagnetic spectrum.

Under the influence of light emanating from the blue LEDs, and cool, many bacteria die. One of the leaders of the team, Professor Yuk Hyun-Gyun, praised the results of the work done:

Our studies reveal a great potential for preserving products without additional chemical treatment. Life shows that the demand for products without food additives and preservatives is constantly growing.

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