Abstract
A general method is described for determining 16 mycotoxins in mixed feeds and other food products used in the manufacture of these feedstuffs. The mycotoxins are extracted and cleaned up by extracting with solvents of different pH. Thin layer chromatography is used to separate the toxins; toxins are then quantitated by the limit detection method. The minimum detectable concentration of mycotoxins in various products is: aflatoxin B1 or G1, 4–5 μg/kg; cchratoxin A or ethyl ester A 140–145 μg/kg; citrinin 600–750 μg/kg; zearalenone, 410–500 μg/kg; sterigmatocystin, 140–145 μg/kg; diacetoxyscirpenol, 2400–2600 μg/kg; T-2 toxin, 800-950 μg/kg; patulin, 750-800 μg/kg; penitrem A 14,000–14,500 μg/kg; penicillic acid 3400-3650 μg/kg.