Α-Carotene
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3D model (JSmol)
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PubChem CID
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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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α-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.
Human physiology
In United States adults 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 (to convert to micromoles per liter, multiply by 0.01863).[1]
Health effects
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Dietary intake affects blood levels of α-carotene, which in one study was associated with significantly lower risk of premature death.[1][2]
Dietary sources
The following vegetables are rich in alpha-carotene:[1]
- Yellow-orange vegetables : Carrots (the main source for U.S. adults), Sweet potatoes, Pumpkin, Winter squash
- Dark-green vegetables : Broccoli, Green beans, Green peas, Spinach, Turnip greens, Collards, Leaf lettuce, Avocado, Parsley (10.7 microgram/gram dried parsley leaf)[3]
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. Archived from the original on 29 November 2010.
{{cite journal}}: Unknown parameter|deadurl=ignored (|url-status=suggested) (help); Unknown parameter|laydate=ignored (help); Unknown parameter|laysource=ignored (help); Unknown parameter|laysummary=ignored (help) - ^ Alpha-carotene Linked to Lower Mortality Rates Archived 2012-05-13 at the Wayback Machine, Tufts Health and Nutrition Letter, March 2011
- ^ Nutritional Data, Parsley, accessed 2013.08.05