University Place

How Vitamin Research Uncovered Essential Minerals

Special | 59m 1s

Roger A. Sunde, Professor, Department of Nutritional Sciences, UW-Madison, explains that copper and zinc, essential elements, were discovered in food while using the bioassay approach (feeding studies with rats) while searching for vitamins. Both vitamins and trace essential minerals were present in levels so low as to evade detection by analytical means, and had to be teased out using bioassay.

Aired: 06/18/13

Rating: TV-G

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