Peanuts are highly volatile biological oil bombs. Toss them into standard breathable bags, and ambient oxygen instantly triggers lipid oxidation. Worse, warehouse humidity breeds Aspergillus flavus, the mold responsible for deadly aflatoxin. This engineering report dissects the physical mechanics of using a heavy-duty peanut vacuum packaging machine to halt this decay. We explain why deep vacuum extraction technology is the only scientifically validated method to prevent peanut oxidation and guarantee aflatoxin prevention across large-scale industrial peanut packing operations.