alpha-Carotene
| α-Carotene | |
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| Identifiers | |
| CAS number | 7488-99-5  |
| PubChem | 6419725 |
| ChemSpider | 3571861 |
| UNII | 45XWE1Z69V |
| ChEBI | CHEBI:28425 |
| Jmol-3D images | Image 1 |
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| Properties | |
| Molecular formula | C40H56 |
| Molar mass | 536.87 g mol−1 |
 (verify) (what is:  / ?)Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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| Infobox references | |
α-Carotene is a form of carotene with a β-ring at one end and an ε-ring at the other. It is the second most common form of carotene.
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[edit] Human physiology
In US adults and Chinese adults the mean concentration of serum α-carotene was 4.7099339 µg/dL, including 4.22 µg/dL among men and 5.31 µg/dL among women (to convert to micromoles per liter, multiply by 0.01863). [1]
[edit] Health effects
Dietary intake affects blood levels of α-carotene which was associated with significantly lower risk of death, in one study.[1]
[edit] Dietary sources
The following vegetables are rich in alpha-carotene[1] :
- Yellow-orange vegetables : Carrots (the main source for US adults), Sweet potatoes, Pumpkin, Winter squash
- Dark-green vegetables : Broccoli, Green beans, Green peas, Spinach, Turnips greens, Collards, Leaf lettuce
[edit] References
- ^ a b c Li C, Ford ES, Zhao G, Balluz LS, Giles WH, Liu S (March 2011). "Serum α-carotene concentrations and risk of death among US Adults: the Third National Health and Nutrition Examination Survey Follow-up Study". Arch. Intern. Med. 171 (6): 507–15. doi:10.1001/archinternmed.2010.440. PMID 21098341. http://archinte.ama-assn.org/cgi/content/full/archinternmed.2010.440v1. [Those With High Alpha-Carotene Blood Levels Live Much Longer Lay summary] – Medical News Today (22 November 2010).
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