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. 2018 Oct 3;7(10):134. doi: 10.3390/antiox7100134

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© 2018 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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(A) Chromatographic separation of (all-E)-rubixanthin and (5′Z)-rubixanthin, using a C30 reversed phase column (see text for chromatographic conditions). (B) Structures of (all-E)-rubixanthin and (5′Z)-rubixanthin. (C) ¹H nuclear magnetic resonance (NMR) spectrum (600 MHz, 293 K, CDCl₃) of (all-E)-rubixanthin prior to light exposition. (D) ¹H NMR spectrum (600 MHz, 293 K, CDCl₃) of (5′Z)-rubixanthin after light exposition.

(A) Chromatographic separation of (all-E)-rubixanthin and (5′Z)-rubixanthin, using a C30 reversed phase column (see text for chromatographic conditions). (B) Structures of (all-E)-rubixanthin and (5′Z)-rubixanthin. (C) ¹H nuclear magnetic resonance (NMR) spectrum (600 MHz, 293 K, CDCl₃) of (all-E)-rubixanthin prior to light exposition. (D) ¹H NMR spectrum (600 MHz, 293 K, CDCl₃) of (5′Z)-rubixanthin after light exposition.