xanthophyll

American  

[zan-thuh-fil] / ˈzæn θə fɪl /

Or xanthophyl

noun

Biochemistry.

1. lutein.

---

xanthophyll British  

/ ˈzænθəʊfɪl /

noun

1. any of a group of yellow carotenoid pigments occurring in plant and animal tissue

---

xanthophyll Scientific  

/ zăn′thə-fĭl′ /

1. Any of various yellow pigments occurring in the leaves of plants and giving young shoots and late autumn leaves their characteristic color. This color is masked by chlorophyll when the leaf is mature. Xanthophylls aid in the absorption of light by capturing certain wavelengths not captured by chlorophyll and rapidly transferring the energy to chlorophyll by boosting one of its electrons to a higher energy level. Xanthophylls are carotenoids, differing from carotenes in having one or more oxygen-containing groups attached.

2. See also carotene

---

Other Word Forms

• xanthophyllous adjective

Etymology

Origin of xanthophyll

From the French word xanthophylle, dating back to 1830–40. See xantho-, -phyll

Example Sentences

The team has been working with three genes that code for proteins of the xanthophyll cycle.

From BBC

I told him about the xanthophyll inventory I had made in my own garden — how it seemed to be everywhere.

From Washington Post

Once the chlorophyll disappears, other substances like carotene and xanthophyll — which have been present all along but masked by the green of summertime — begin to show.

From Time

To separate the carotin from xanthophyll place the ether solution in a small open dish and evaporate to a small volume.

From Project Gutenberg

PALMER: The physiological relation of the pigment to the xanthophyll of plants.

From Project Gutenberg