i work at a large bakery as a chemist where we tested every ingredient that went into the bread and other things.
It was one of the other things that gave me pause to respect.
They frozen bread and at some appoint time in the future they would do an organoleptic test on it (taste test)
there was this orange cinnamon raisin bread that we got to try after being frozen for 20 years (not a typo)
it was wonderful
who knew bread lasts so long frozen!