Alpha-Keto Acids in Vitamin-Free Casein Hydrolyzates (Acid)
- 28 August 1959
- journal article
- research article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 130 (3374), 505-506
- https://doi.org/10.1126/science.130.3374.505
Abstract
α-Ketoglutaric and pyruvic acids were isolated as their 2-4-dinitrophenylhydrazones from five different commercial samples of vitamin-free acid hydrolyzates of casein. In addition, one sample yielded traces of α-ketobutyric acid. The hydrazones were converted by hydrogenation to glutamic acid, alanine, and α-aminobutyric acid and identified by paper chromatography.Keywords
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