Carotenoids

Carotenoids are a diverse group of naturally occurring pigments found in plants, algae, and photosynthetic bacteria.

They are responsible for the vibrant yellow, orange, and red colors seen in many fruits, vegetables, and flowers.

Chemically, carotenoids are tetraterpenoids, meaning they are built from eight isoprene units.

They function primarily as accessory pigments in photosynthesis, absorbing light energy that chlorophyll cannot and transferring it to chlorophyll for energy conversion.

Some carotenoids, like beta-carotene, also act as antioxidants, protecting cells from damage caused by free radicals.

They play a vital role in human health, with some carotenoids converted into vitamin A, essential for vision, immune function, and cell growth.

Carotenoids meaning with examples

• The deep orange hue of carrots is a testament to their rich carotenoid content, particularly beta-carotene. This helps to protect your vision.
• Marigolds get their bright yellow petals from carotenoids. This gives them a visual interest, with added benefits.
• Astaxanthin, a carotenoid found in salmon and shrimp, is a potent antioxidant, contributing to the fish's reddish-pink flesh.
• Leafy green vegetables, though appearing green, also contain carotenoids, masked by chlorophyll until autumn when it dies.
• The yellow-orange color of egg yolks is primarily due to carotenoids in the chicken's feed, highlighting the link to diet.

Carotenoids Synonyms

lipochromes natural pigments plant pigments tetraterpenoids

Carotenoids Antonyms

chlorophyll melanin