What is carotenoids?

Carotenoids are vitamin A precursors, chemical such as beta carotene, a deep yellow carotenoid pigment found in dark green, bright yellow, and orange fruits and vegetables. The carotenoids also found in microorganisms, insects, birds, fish and other animals.

Humans do not biosynthesis carotenoids so all carotenoids that are found in human blood and tissues must be ingested, ether in food or as supplements.

Human body transforms a vitamin A precursor into retinol-like substance. Due to functions as a source of vitamin A, it can prevent vitamin A deficiency.

Carotenoids that do not contain oxygen are called carotenes, and are deep orange on color; those that contain oxygen are called xanthophylls and are yellowish.

Carotenoids are also used as colorants in manufactured food products, and carotenoids and carotenoid-rich extracts are available as supplements.

Carotenoids absorb light primarily in the blue and green regions of the spectrum while reflecting those of the yellow, orange, and red region. Carotenoids produce the characteristics colors of carrot and oranges and the leaves plants during the fall.
What is carotenoids?