News & Videos. Â© Seattle Seahawks 2017. All rights reserved. Â® SEAHAWKS, SEAHAWKS LOGO, SPIRIT OF 12, WE ARE 12, BRING ON THE 12, LEGION OF BOOM, 12 and 12S are trademarks of the Seattle Seahawks. Â® The term 12th MAN is a trademark of Texas A & M University and its use is pursuant to a license agreement with the university.
Another pigment found in the leaves of many plants is carotene. Carotene absorbs blue-green and blue light. The light reflected from carotene appears yellow. Carotene is also a large molecule (C 40 H 36) contained in the chloroplasts of many plants.
Lutein, lycopene, and zeaxanthin cannot be converted to retinol, so they have no vitamin A activity (Figure 2). Carotenoids can be broadly classified into two classes, carotenes (Î±-carotene, Î²-carotene, and lycopene) and xanthophylls (Î²-cryptoxanthin, lutein, and zeaxanthin).hese richly colored molecules are the sources of the yellow, orange, and red colors of many plants (1) . Fruit and vegetables provide most of the carotenoids in the human diet. Î±-Carotene, Î²-carotene, Î²-cryptoxanthin, lutein, lycopene, and zeaxanthin are the most common dietary carotenoids.