Dictionary > Xanthophyll

Xanthophyll

Definition
noun, plural: xanthophylls
A type of carotenoid in which its molecular structure contains oxygen
Supplement
Accessory pigments are non-chlorophyll pigments within the chloroplasts of photoautotrophs. They help in absorbing other light energy essential during the light reactions of photosynthesis. There are two major types of accessory pigments in plants and they are carotenoids and phycobilins. Carotenoids are accessory pigments that are typically yellow, red and orange. They are insoluble in water in contrast to phycobilins that are water-soluble. They occur in chloroplasts where they aid in the light absorption for photosynthesis. They are also found in chromoplasts. There are various carotenoids and they are grouped into xanthophylls and carotenes.
Xanthophylls are carotenoids that occur widely in nature. They are yellow pigments; thus, this accounts for their name, ‘xanthophyll’, which is derived from Greek xanthos– (yellow) and ”phyllon (leaf). Xanthophylls are found in young as well as in etiolated leaves. They are also found in papaya, peaches, prunes, etc.1 Examples of xanthophylls are lutein, zeaxanthin, neoxanthin, violaxanthin, flavoxanthin, and α- and β-cryptoxanthin.
Synonym(s):

  • phylloxanthin

See also:

  • carotene
  • carotenoid
  • accessory pigment
  • chlorophyll
  • photosynthesis
  • Zeaxanthin
  • Cryptoxanthin
  • Luteol
  • Zeaxanthol
  • Reference(s):

    1 ‘Xanthophyll.” Retrieved from ://en.wikipedia.org/wiki/Xanthophyll.


    You will also like...

    Peppered moth ("Biston betularia") melanic and light form
    Examples of Natural Selection

    Darwin's Finches are an example of natural selection in action. They are an excellent example of the way species' gene p..

    genes controlling growth and development
    Control of Growth & Development

    Control of Growth & Development tutorials look at how the genetic makeup determines the biological processes on a da..

    Early Earth
    The Origins of Life

    This tutorial digs into the past to investigate the origins of life. The section is split into geological periods in the..

    Structural depiction of catalase, an enzyme
    Protein Activity and Cellular Metabolism

    Proteins have a crucial role in various biological activities. Get to know how proteins are able to perform as enzymes, ..

    Origins of Life on Earth
    Origins of Life on Earth

    Earth was created around 4.5 billion years ago and life began not long after. Primitive life likely possessed the elemen..

    Endemic Flora of New Zealand
    New Zealand’s Unique Flora

    If New Zealand has lots of unique animals, it's also got a whole lot of unique plants. Find out more about some of them,..