Shining a Light on the Use of Light-Emitting Diodes (LED) in the Food Industry

November 18, 2015

CHICAGO— Light-emitting diodes (LEDs) are everywhere, from car headlights to cell phones and ultra-thin screen TVs. Now LEDs are being used in the food industry. In a new review article from Comprehensive Reviews in Food Science and Food Safety, published by the Institute of Food Technologists (IFT), researchers from the National University of Singapore (NUS) and the Agri-food and Veterinary Authority (AVA) of Singapore reviewed the advantages of LED technology over conventional lighting, and showed how LEDs are the most suitable light source to prevent food spoilage, inactivate pathogens and improve nutrition.

LEDs are able to either delay or accelerate the ripening of certain fruits and help prevent food spoilage. In addition, LEDs can efficiently inactivate harmful foodborne pathogens. This is desirable especially since it is a nonthermal means (without heat), and results in a lower risk of antimicrobial-resistant strains being formed. In postharvest applications, LEDs not only delay deterioration, but also improve nutritional content.

Although the effectiveness of LEDs, has been shown to generally improve or retain the quality of foods, few studies have evaluated consumers’ acceptability of LED treated food. The authors of the review article highlight this as an area where more research and education is needed.   

Read the article in Comprehensive Reviews in Food Science and Food Safety here

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Founded in 1939, the Institute of Food Technologists is committed to advancing the science of food. Our non-profit scientific society—more than 17,000 members from more than 95 countries—brings together food scientists, technologists and related professionals from academia, government and industry. For more information, please visit ift.org.

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