Violaxanthin
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| Names | |
|---|---|
| IUPAC name
(1S,4S,6R)-1-[(1E,3E,5E,7E,9E,11E,13E,15E,17E)-18-[(1S,4S,6R)-4-Hydroxy-2,2,6-trimethyl-7-oxabicyclo[4.1.0]heptan-1-yl]-3,7,12,16-tetramethyloctadeca-1,3,5,7,9,11,13,15,17-nonaenyl]-2,2,6-trimethyl-7-oxabicyclo[4.1.0]heptan-4-ol | |
| Other names
5,6:5',6'-Diepoxy-5,5',6,6'-tetrahydro-β-carotene-3,3'-diol, Zeaxanthin diepoxide, all-trans-Violaxanthin, E161e | |
| Identifiers | |
126-29-4  | |
| 3D model (Jmol) | Interactive image |
| ChEBI | CHEBI:35288 |
| ChemSpider | 395237 |
| E number | E161e (colours) |
| PubChem | 448438 |
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| Properties | |
| C40H56O4 | |
| Molar mass | 600.85 g/mol |
| Appearance | Orange crystals |
| Melting point | 200 °C (392 °F; 473 K) |
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
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| Infobox references | |
The xanthophyll cycle
Violaxanthin is a natural xanthophyll pigment with an orange color found in a variety of plants including pansies. It is biosynthesized from zeaxanthin by epoxidation.[1] As a food additive it is used under the E number E161e as a food coloring; it is not approved for use in the EU[2] or USA however is approved in Australia and New Zealand[3] (where it is listed under its INS number 161e).
References
- 1 2 Merck Index, 11th Edition, 9902.
- ↑ UK Food Standards Agency: "Current EU approved additives and their E Numbers". Retrieved 2011-10-27.
- ↑ Australia New Zealand Food Standards Code"Standard 1.2.4 - Labelling of ingredients". Retrieved 2011-10-27.
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