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Department of Food Science and Technology, University of California, Davis
ABSTRACT
A feeding trial was conducted to determine if ethoxyquin, or its residues, is transferred from feed to milk when added to feed at 0.015% of the dry matter intake. A very low concentration (less than 7 µg/ liter) of ethoxyquin was detected in milk by a fluorimetric procedure and by thin layer chromatography. Feeding ethoxyquin did not increase milk tocopherol, but was accompanied by appearance in milk of a compound (not yet identifled) that interfered in the determination of ethoxyquin by a fluorimetric method, and in the determination of tocopherol by a method used before in our laboratory.
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