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Science 18 February 1972:
Vol. 175. no. 4023, pp. 761 - 762
DOI: 10.1126/science.175.4023.761
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Articles

Dihydroxyphenylalanine in Rat Food Containing Wheat and Oats

R. Hoeldtke 1, B. S. Baliga 1, P. Issenberg 1, and R. J. Wurtman 1

1 Laboratory of Neuroendocrine Regulation, Department of Nutrition and Food Science, Massachusetts Institute of Technology, Cambridge 02139

Dopa has been identified in rat food by three different fluorimetric assays and paper chromatography. Incubation of the rat food with proteolytic enzymes dramatically increased the measurable free dopa. Analysis of samples of six individual protein-containing constituents of rat food revealed that both wheat and oats contain dopa.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)