Collaborative study of the determination of aflatoxin in corn and soybeans
1972
Shotwell, O.L. | Stubblefield, R.D.
A study was made to determine whether the procedure commonly designated as the CB method, previously recommended for determining aflatoxin in peanuts and peanut products, could be applied to corn and soybeans. Both naturally contaminated and spiked corn and soybeans were extracted and analysed by TLC. Of the 15 collaborating laboratories, 9 were equipped to measure aflatoxins on TLC plates densitometrically, as well as visually. Seven collaborators used molar absorptivities to determine the concentration of aflatoxins in solutions to be used for TLC standards. The official CB method has been extended to include corn and soybeans, and the rapid TLC screening technique for aflatoxin in corn has been adopted as official first action.
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