Is 460nm LED Lighting in Groceries Altering the Taste of Milk?
Researchers from Cornell University’s Department of Food Science think so. Consumers were tested: older milk was shielded from light for 14 days, while one-day old milk was introduced to LED lighting for only 4 hours. Consumers overwhelmingly preferred the older milk, and described the newer, LED-pelted milk as tasting like “cardboard or plastic.”
Cornell researchers in the Department of Food Science found exposure to light-emitting diode (LED) sources for even a few hours degrades the perceived quality of milk more so than the microbial content that naturally accumulates over time. Their study determined milk remained at high-quality for two weeks when shielded from LED exposure, and consumers overwhelmingly preferred the older, shielded milk over fresh milk stored in a typical container that had been exposed to LED light for as little as four hours.
As sellers adopt these light-efficient energy sources in dairy cases and point-of-sale locations, merchants might unwittingly sabotage the product they are trying to sell.
“For some reason we love to look across the store and see this glowing case of milk that’s shining bright,” said Robin Dando, senior author on the paper and assistant professor in the Department of Food Science. “It’s attractive to look at, but we might actually be damaging the quality of the product.”
8-6-2021 (August 6, 2021) is the Snakiest day of the year and it’s also this year’s CircuitPython Day! The day highlights all things CircuitPython and Python on Hardware. See you there!
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.