A while ago I ordered some blue lasers online, I got them a few weeks later and

Question

A while ago I ordered some blue lasers online, I got them a few weeks later and was having a blast lasing things around the house to see if they do anything strange, like fluoresce or something, I happened to hit a bag of cashews with the laser and i noticed something very strange, the cashews actually showed some phosphorescence, they glowed a orangy green for about a second after I stopped shining the laser on them, they were actually showing weak BUT VISIBLE phosphorescent properties, I was very excited and started trying other organic things with the laser, I also found out that cashews, peanuts, and almonds all had the same effect to a limited degree, it turns out that peanuts has the longest and brightest glow of the different nuts I tested, also wasabi glows but very poorly. then i tested peanut butter and low and behold it glowed as well and better than all the others better than plain peanuts, (skippy brand) then I went on the internet and didn't find even a hint of a reason why this happens.

If you are stumped do i get a prize?

Explanation / Answer

There was a paper that was published by some researchers in Athens about 7 or 8 years ago and they were looking at things like olive oil. They also looked at some other nut oils. Their motivation for looking at the fluorescent property of oils was because they wanted to try to come up with a test in order to prove that a sample of oil was authentic, because lots of people sell virgin olive oil for example, and often, it

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