Beta-Carotene: Thermal Degradation
- 1 May 1964
- journal article
- research article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 144 (3618), 533-534
- https://doi.org/10.1126/science.144.3618.533
Abstract
Thermal treatment of crystalline β-carotene (240°C in a vacuum) results in the formation of a volatile fraction containing chiefly aromatic hydrocarbons such as toluene, m- and p-xylene, 2,6-dimethylnaphthalene, and ionene. These compounds have been identified by means of gas-liquid chromatography, infrared spectroscopy, and, in the case of ionene, by additional nuclear magnetic resonance and mass spectroscopy. The principal degradation product is a yellowish-brown, glutinous mass which can be separated by means of preparative thin-layer chromatography in a number of fractions different in molecular weight. The structure of these fractions is not yet clear.Keywords
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