Polgár, A. and Zechmeister, L. (1942) Isomerization of β-Carotene. Isolation of a Stereoisomer with Increased Adsorption Affinity. Journal of the American Chemical Society, 64 (8). pp. 1856-1861. ISSN 0002-7863. http://resolver.caltech.edu/CaltechAUTHORS:20180731-134600986
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Abstract
In spite of the fact that the phenomenon of carotenoid isomerization was first detected for β-carotene, our knowledge in this special case is still very incomplete. These authors crystallized an isomer which they termed pseudo-α-carotene, and which appears immediately below β-carotene on the Tswett column. Gillam first assumed that the chromatographic process itself was responsible for the partial conversion, but it was shown later that the phenomenon occurs spontaneously and independently of a chromatographic experiment. This conclusion was confirmed by Carter and Gillam.
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| Additional Information: | © 1942 American Chemical Society. Received April 27, 1942. We wish to thank the Rockefeller Foundation for a grant which enabled the members of this Laboratory to carry out the experiments described below and in some previous papers. To Dr. G. Oppenheimer and Mr. G. Swinehart, the authors are indebted for microanalytical assistance, to Merck & Co., Inc. for a vitamin A assay. | ||||||
| Errata: | Page 1858. Line 23, omit the word "no." — L. Zechmeister. | ||||||
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| Record Number: | CaltechAUTHORS:20180731-134600986 | ||||||
| Persistent URL: | http://resolver.caltech.edu/CaltechAUTHORS:20180731-134600986 | ||||||
| Official Citation: | Isomerization of β-Carotene. Isolation of a Stereoisomer with Increased Adsorption Affinity. A. Polgár and L. Zechmeister. Journal of the American Chemical Society 1942 64 (8), 1856-1861. DOI: 10.1021/ja01260a032 | ||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||
| ID Code: | 88389 | ||||||
| Collection: | CaltechAUTHORS | ||||||
| Deposited By: | Tony Diaz | ||||||
| Deposited On: | 31 Jul 2018 22:07 | ||||||
| Last Modified: | 31 Jul 2018 22:07 |
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