Pilot-plant dry milling of corn containing aflatoxin
1975
Brekke, O.L. | Peplinski, A.J. | Nelson, G.E.N. | Griffin, E.L. Jr
3 lots of corn (1 yellow, 2 white) naturally contaminated with different levels of aflatoxin (13, 160, and 510 parts/billion of B1) were dry-milled to determine distribution of the toxin among product fractions. No problems were encountered in the milling steps. Product yields and fat contents were fairly typical of those for a normal dent corn. Aflatoxin level was always lowest in grits and highest in germ, hull, or degermer fines, and varied with contamination level of corn being milled. Proportion of aflatoxin B1 in prime product mix (i.e., grits, low-fat meal, and low-fat flour) amounted to only 7-10% of total quantity of B1 in all products. Concn. of aflatoxin in degermer fines, germ, and hull exceeded that of the corn milled. Aflatoxin B1 level in endosperm-derived products correlated with their fat content. Yield of prime product mix, based on all products recovered, varied between 49 and 60% in these tests.
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