WHAT IS A XANTOPHYLL AND WHAT IS ITS FUNCTION?

Question

WHAT IS A XANTOPHYLL AND WHAT IS ITS FUNCTION?

Answer 1

Xanthophyll is a coloured pigment present in chloroplast.

It mainly helpful for the traping of light energy.  

Answer 2

They are a class of carotenoids.

Carotenoids are organic pigments that are naturally occurring in chromoplasts of plants and some other photosynthetic organisms like algae, some types of fungus and some bacteria.

They absorb blue light

Carotenoids serve two key roles in plants and algae: they absorb light energy for use in photosynthesis, and they protect chlorophyll from photodamage.[1] In humans, carotenoids such as beta-carotene are a precursor to vitamin A, a pigment essential for good vision, and carotenoids can also act as antioxidants.

Answer 3

these are yellow coloured carotenoids with a general formula C40H56O2..eg...Zeaxanthin,lutein etc...these act as accessory pigments of photosynthesis..it absorbs light energy in the mid region of visible spectrum and transfer their absorbed energy to chlorophyll molecules..they pick up nascent O2 released during photooxidation of water and change them into molecular state..thus they protect the chlorophyll molecules from photooxidation....

Answer 4

Xanthophylls (originally phylloxanthins) are yellow pigments from the carotenoid group. Their molecular structure is based on carotenes; contrary to the carotenes, some hydrogen atoms are substituted by hydroxyl groups and/or some pairs of hydrogen atoms are substituted by oxygen atoms. They are found in the leaves of most plants and are synthesized within the plastids. They are involved in photosynthesis along with green chlorophyll, which typically covers up the yellow except in autumn, when the chlorophyll is denatured by the cold.