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Previtamin From Wikipedia, the free encyclopedia
α-Carotene (alpha-carotene) is a form of carotene with a β-ionone ring at one end and an α-ionone ring at the opposite end. It is the second most common form of carotene.
Names | |
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IUPAC name
(6′R)-β,ε-Carotene | |
Systematic IUPAC name
1,3,3-Trimethyl-2-{(1E,3E,5E,7E,9E,11E,13E,15E,17E)-3,7,12,16-tetramethyl-18-[(1R)-2,6,6-trimethylcyclohex-2-en-1-yl]octadeca-1,3,5,7,9,11,13,15,17-nonaen-1-yl}cyclohex-1-ene | |
Identifiers | |
3D model (JSmol) |
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ChEBI | |
ChemSpider | |
PubChem CID |
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UNII | |
CompTox Dashboard (EPA) |
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Properties | |
C40H56 | |
Molar mass | 536.873 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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In American and Chinese adults, the mean concentration of serum α-carotene was 4.71 μg/dL. Including 4.22 μg/dL among men and 5.31 μg/dL among women.[1][2]
The following vegetables are rich in alpha-carotene:[1]
A 2018 meta-analysis found that both dietary and circulating α-carotene are associated with a lower risk of all-cause mortality. The highest circulating α-carotene category, compared to the lowest, correlated with a 32% reduction in the risk of all-cause mortality, while increased dietary α-carotene intake was linked to a 21% decrease in the risk of all-cause mortality.[3]
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