other than the fries that didn't really show anything.
i've worked with the absolute best ingredients available, period, and when somebody doesn't clean well or forgets or honestly makes a science experiment the same molding happens. i worked part time at a whole foods once, their stuff is preservative free (for the most part, they are a bastard, lying company, but thats a different story). we'd hide things under shelves to see what would happen. all natural things do the same shit.
the fries though... thats fucked up.
when i was little i ate mcdonalds because it was fed to me, i also played with lego... a few years ago i busted out said toy and found a couple fries that i'd apparently spilled when cleaning up my toys. they were atleast 9 years old. they looked the same, they were just really hard. gross.