Bixin
From Infogalactic: the planetary knowledge core
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Names | |
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IUPAC name
(2E,4E,6E,8E,10E,12E,14E,16Z,18E)-20-methoxy-4,8,13,17-tetramethyl-20-oxoicosa-2,4,6,8,10,12,14,16,18-nonaenoic acid
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Other names
cis-Bixin; α-Bixin; 9-cis-6,6'-Diapo-ψ,ψ-carotenedioic acid, 6-methyl ester
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Identifiers | |
6983-79-5 ![]() 39937-23-0 (trans-Bixin) ![]() |
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ChEMBL | ChEMBL1172615 ![]() |
ChemSpider | 4444638 ![]() |
Jmol 3D model | Interactive image |
PubChem | 5281226 |
UNII | 9L7T4VB66G ![]() |
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Properties | |
C25H30O4 | |
Molar mass | 394.51 g·mol−1 |
Appearance | Orange crystals |
Insoluble | |
Vapor pressure | {{{value}}} |
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 | |
Bixin is an apocarotenoid found in annatto, a natural food coloring obtained from the seeds of the achiote tree (Bixa orellana). Annatto seeds contain about 5% pigments, which consist of 70-80% bixin.[2]
Bixin is chemically unstable when isolated and converts via isomerization into trans-bixin (β-bixin), the double-bond isomer.[1]
Bixin is soluble in fats but insoluble in water. Upon exposure to alkali, the methyl ester is hydrolyzed to produce the dicarboxylic acid norbixin, a water-soluble derivative.
References
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- ↑ 1.0 1.1 Merck Index, 11th Edition, 1320
- ↑ Executive Summary Bixin, National Toxicology Program