α-Carotene
| |
| |
| Names | |
|---|---|
| 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)
|
|
| ChEBI | |
| ChemSpider | |
PubChemCID
|
|
| UNII | |
CompTox Dashboard(EPA)
|
|
| |
| |
| Properties | |
| C40H56 | |
| Molar mass | 536.873 |
Except where otherwise noted, data are given for materials in theirstandard state(at 25 °C [77 °F], 100 kPa).
| |
α-Carotene(alpha-carotene) is a form ofcarotenewith a β-iononering at one end and an α-iononering at the opposite end. It is the second most common form ofcarotene.
Human physiology[edit]
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]
Dietary sources[edit]
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,turnipgreens,collards,leaflettuce,avocado
Research[edit]
A 2018 meta-analysis found that both dietary andcirculatingα-carotene are associated with a lower risk of all-causemortality.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]
References[edit]
- ^abLi 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.PMID21098341.Archived fromthe originalon November 29, 2010.
- Nordqvist C (November 22, 2010)."Those With High Alpha-Carotene Blood Levels Live Much Longer".Medical News Today.
- ^Alpha-carotene Linked to Lower Mortality RatesArchivedMay 13, 2012, at theWayback Machine,Tufts Health and Nutrition Letter, March 2011
- ^Jayedi A, Rashidy-Pour A, Parohan M, Zargar MS, Shab-Bidar S (2018)."Dietary Antioxidants, Circulating Antioxidant Concentrations, Total Antioxidant Capacity, and Risk of All-Cause Mortality: A Systematic Review and Dose-Response Meta-Analysis of Prospective Observational Studies".Adv Nutr.9(6): 701–716.doi:10.1093/advances/nmy040.PMC6247336.PMID30239557.