So recently I got these LED strip lights to go around the ceiling in my room and noticed that pineapples (when cut up) appear more orange while under purple UV light. I'm blaming it on bad CRI or something thats inside the pineapple that reacts to UV light. Does anyone know what could cause this?

https://en.wikipedia.org/wiki/Fluorescence

Thanks! I always found it cool how some of my clothing glows under the light of the UV fluorescents.