What does xanthophyll mean?
Xanthophyll names a group of yellow, oxygen-containing carotenoid pigments found in plants, algae, and some microorganisms. These pigments absorb light for photosynthesis and help produce the yellow colors seen in many leaves, flowers, fruits, and organisms. Their effects are often especially noticeable in autumn, when green chlorophyll breaks down and the xanthophyll pigments become visible. In nutrition and food science, xanthophylls are discussed as components of foods such as leafy greens, peppers, and egg yolks. The term should not be confused with carotene, another type of carotenoid that is usually orange or red and contains no oxygen, or with chlorophyll, the green pigment responsible for most photosynthesis. Xanthophyll is useful to writers and readers because it identifies a specific, scientifically recognized category of yellow plant pigment rather than merely describing color in general.
nounAny of a group of yellow, oxygen-containing carotenoid pigments found in plants, algae, and some microorganisms. Xanthophylls help absorb light for photosynthesis and contribute to the yellow coloration of many leaves, flowers, fruits, and other organisms.
- A yellow carotenoid pigment found in plants, algae, and microorganisms, involved in light absorption and responsible for much of the yellow coloration in leaves and other biological tissues.
"As chlorophyll breaks down in autumn, the xanthophyll pigments in leaves become more visible, helping create their golden colors."
"The bright yellow petals owe much of their color to carotenoid xanthophyll pigments."
"Researchers measured the xanthophyll content of kale to compare its antioxidant capacity with that of other vegetables."
Use the plural when referring to several distinct yellow carotenoid pigments or when discussing different xanthophylls separately.
"Different xanthophylls dominate the yellow coloration of different flowers and fruits."
Xanthophyll is the golden pigment that can remain visible after leaves lose their green chlorophyll.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does xanthophyll come from?
Xanthophyll was formed in the early 19th century from Greek xanthos, meaning “yellow,” and phyllon, meaning “leaf.” The name reflects the pigment's original association with yellow leaves and its relationship to plant coloration. The elements are also reflected in cognates such as xanthous and xanthic, meaning yellowish or yellow, while chlorophyll combines the same leaf element with a different color root.
How xanthophyll is actually used
Xanthophyll is primarily a scientific term used in plant biology, biochemistry, and nutrition. It may refer to the group of yellow pigments or to an individual pigment within that group.
Easily confused with xanthophyll
Carotene is an oxygen-free carotenoid that is usually orange or red, whereas xanthophyll is an oxygen-containing carotenoid pigment that is yellow.
Chlorophyll is the principal green photosynthetic pigment in plants, while xanthophyll is a group of yellow accessory pigments.