Peanuts are likely to be infested by fungi with consequent contamination by aflatoxin in post-harvest
industries. A hazard analysis critical control point (HACCP) plan is proposed for a typical Brazilian
post-harvest industry from raw in-shell reception to the unpeeled peanuts transportation. Codex Alimentarius
Commission guidelines were followed, with four critical control points (CCP) for aflatoxin being
identified. The process steps with highest probability of aflatoxin occurrence (risk) are the in-shell reception,
the dried in-shell storage, and the unpeeled kernel storage. During the storage steps there is a lack of
control of air moisture and temperature. Therefore, there is no option but to keep rigid monitoring and
control over each CCP, and detour lots with high aflatoxin levels to either oil or seed production. Attempts
to correlate the aflatoxin levels with the rainfall showed an irregular trend of the toxin level.