Depends on who you bought them from and how you stored them.
Molds can grow in nuts and nutmeats and produce mycotoxins (from toxin-producing strains such as aflatoxins by Aspergillus flavus). The mold is usually visible and below is picture of Aspergillus flavus growing on a nut product. Source
The amount of aflatoxin produced by the mold is dependent on ...
Just adding a little bit more info taking from the answer above.
You got two types of anaerobes:
Facultative anaerobe that makes ATP by aerobic respiration if oxygen is present. It can switch to fermentation or anaerobic respiration if oxygen is absent. Most common example of a food pathogen in this category: E. coli
Obligate anaerobe which are killed by ...
I do not understand why anaerobic bacteria, that don't require and cannot survive in air, do not proliferate and thrive in the vacuum sealed food containers
They do. Vacuum sealing can prevent aerobic bacterial growth but does not prevent anaerobic growth.
Botulism is a particularly dangerous consequence. If food containing C. botulinum spores is sealed ...