Zeaxanthin: Difference between revisions
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'''Zeaxanthin''' is a natural [[antioxidant]] [[ | '''Zeaxanthin''' is a natural [[antioxidant]] [[carotenoid]] [[phytochemical]] that helps prevent age-related [[macular degeneration]], presumably due to it ability to absorb phototoxic blue light and near ultraviolet light. | ||
It nearly identical in structure with [[lutein]], differing only in the position of single double bond within the rightmost [[cyclohexene]] ring system. | It nearly identical in structure with [[lutein]], differing only in the position of single double bond within the rightmost [[cyclohexene]] ring system. | ||
{{Image|Zeaxanthin.png|center|600px|Zeaxanthin, an antioxidant chemical.}} | {{Image|Zeaxanthin.png|center|600px|Zeaxanthin, an antioxidant chemical.}} | ||
== Natural sources == | |||
Green leafy vegetables, yellow/orange vegetables and egg yolks are excellent sources of both lutein and zeaxanthin. Because these two compounds are so similar in structure and function, it is convenient to measure them together. | |||
{| class = "wikitable" align="center" | |||
|+ Amount of Lutein Plus Zeaxanthin in Various Food Items<ref>{{cite journal | journal = Journal of the American College of Nutrition | title = Lutein and Zeaxanthin and Their Potential Roles in Disease Prevention | authors = JD Ribaya-Mercado and JB Blumberg | volume = 23 | pages = 567S-587S | year = 2004 }}</ref> | |||
! Food!!Micrograms/cup!!Micrograms/100 grams | |||
|- align="center" | |||
|[[Kale]]|| 23,720 || 18,246 | |||
|- align="center" | |||
|[[Spinach]]|| 20,354 || 11,308 | |||
|- align="center" | |||
|[[Turnip]] greens|| 12,154 || 8,440 | |||
|- align="center" | |||
|[[Collards]] || 14,619 || 7,694 | |||
|- align="center" | |||
|[[Mustard Greens]]|| 8,347 || 5,962 | |||
|- align="center" | |||
|[[Parsley]]|| 556 || 5,560 | |||
|- align="center" | |||
|[[Dandelion]] Greens|| 4,944 || 4,709 | |||
|- align="center" | |||
|[[Egg yolk|Egg Yolk]] || 505/yolk || 2,980 | |||
|- align="center" | |||
|[[Green Pea]]s, Frozen || 3,840 || 2,400 | |||
|- align="center" | |||
|[[Romaine lettuce|Lettuce, Romaine]]|| 1,295 || 2,313 | |||
|- align="center" | |||
|[[Summer squash|Squash, summer]]|| 4,048 || 2,249 | |||
|- align="center" | |||
|[[Beet greens]]|| 2,619 || 1,819 | |||
|- align="center" | |||
|[[Greenleaf lettuce|Lettuce, Greenleaf]]|| 969 || 1,730 | |||
|- align="center" | |||
|[[Broccoli]]|| 2,367 || 1,517 | |||
|- align="center" | |||
|[[Winter squash|Squash, winter]]|| 2,901 || 1,415 | |||
|- align="center" | |||
|[[Brussels sprouts|Brussels Sprouts]]|| 2,012 || 1,290 | |||
|- align="center" | |||
|[[Onion]]s / [[Scallion]]s || 1,137 || 1,137 | |||
|- align="center" | |||
|[[Corn]], Canned Sweet Yellow || 2,195 || 1,045 | |||
|- align="center" | |||
|[[Pumpkin]] || 2,484 || 1,014 | |||
|- | |||
|} | |||
== References == | |||
<references/> | |||
Latest revision as of 13:43, 28 October 2009
Zeaxanthin is a natural antioxidant carotenoid phytochemical that helps prevent age-related macular degeneration, presumably due to it ability to absorb phototoxic blue light and near ultraviolet light. It nearly identical in structure with lutein, differing only in the position of single double bond within the rightmost cyclohexene ring system.
Natural sources
Green leafy vegetables, yellow/orange vegetables and egg yolks are excellent sources of both lutein and zeaxanthin. Because these two compounds are so similar in structure and function, it is convenient to measure them together.
| Food | Micrograms/cup | Micrograms/100 grams |
|---|---|---|
| Kale | 23,720 | 18,246 |
| Spinach | 20,354 | 11,308 |
| Turnip greens | 12,154 | 8,440 |
| Collards | 14,619 | 7,694 |
| Mustard Greens | 8,347 | 5,962 |
| Parsley | 556 | 5,560 |
| Dandelion Greens | 4,944 | 4,709 |
| Egg Yolk | 505/yolk | 2,980 |
| Green Peas, Frozen | 3,840 | 2,400 |
| Lettuce, Romaine | 1,295 | 2,313 |
| Squash, summer | 4,048 | 2,249 |
| Beet greens | 2,619 | 1,819 |
| Lettuce, Greenleaf | 969 | 1,730 |
| Broccoli | 2,367 | 1,517 |
| Squash, winter | 2,901 | 1,415 |
| Brussels Sprouts | 2,012 | 1,290 |
| Onions / Scallions | 1,137 | 1,137 |
| Corn, Canned Sweet Yellow | 2,195 | 1,045 |
| Pumpkin | 2,484 | 1,014 |
References
- ↑ (2004) "Lutein and Zeaxanthin and Their Potential Roles in Disease Prevention". Journal of the American College of Nutrition 23: 567S-587S.