UV light increases vitamin D in mushrooms

Sunlight is an excellent way for a person to get their vitamin D--the ultraviolet light in the sun’s rays converts cholesterol in the skin to vitamin D. Now scientists say they can use this technique to raise the level of vitamin D in mushrooms.

Researchers from Penn State University managed to change a mushroom from having zero vitamin D levels to 100 percent vitamin D levels in less than a second. By exposing a mushroom’s surface to rapid pulses of UV light, a chemical process is triggered that converts a mushroom’s version of cholesterol into vitamin D.

The mushrooms maintained their levels of vitamin D for a week after exposure in the refrigerator. Negative impacts from the treatment have not been found.

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Sourced from: livescience.com, UV Light Makes Mushrooms Rich in Vitamin D