While it may not pertain to maple popcorn, the lightbulb in a small popcorn machine does well keeping plain popcorn taste fresh. Maybe you can try a single batch and put it in something that will contain the warmth and drying effect on the maple popcorn and just do a test.
We had a popcorn machine and the cabinet was not air tight, it could breathe, and with the light in it turned on it kept the popcorn fresh. I think the bulb was 40 watt if I recall. Ours was about 18" x18"x24" or so.
Dave Klish, I recently ordered a 2x6 wood fired evaporator from A&A Sheet Metal which I will be converting to oil fired
Now have solar, 2x6 finish pan, 5 bank 7x7 filter press, large water jacketed bottler, and tankless water heater.
Recently bought another Gingerich RO, this one was a 125, but a second membrane was added thus is a 250, like I had.
After running a 2x3, a 2x6, 3x8 tapping from 79 taps up to 1320 all woodfired, now I'm going to a 2x6 oil fired and a 200-425 taps.