Detoxification of aflatoxins in some food commodities and poultry ration

ABSTRACT

The purpose of this study was to devise a practical method to inactivate the aflatoxin in feed stuffs or rations. Physical methods used were dry heating at temperatures of 120, 160 and 180 C for 1,2 and 3 hours respectively, and wet heating at temperatures of 160 and 180 C for 1 and 2 hours respectively. The results of defoxification by these methods were not encouraging where the maximum reduction percents by dry or wet heating were 18 and 42% respectively. The chemical methods used were ammoniation and reaction with formaldehyde. Each of them gave excellent results in destroying aflatoxin almost completely. Good airing after ammoniation is very important to get rid of ammonia residues; formaldehyde residues were oxidised by potassium permanganate to a safe level