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Carotenoids | health benefits, dietary sources, side effects
Among them, isorenieratane, found in oils of Devonian age, is derived from the carotenoid isorenieratene (an homologue of the previous one but with an unsaturated isoprenoid chain), which is synthesized by photosynthetic green sulfur bacteria (Chlorobiaceae)().
Carotenoids are the pigments responsible for the colors of manyplants, fruits and flowers. They serve as Light Harvesting Complexes(with proteins) in photosynthesis. Carotenoids are important in humannutrition as a source of Vitamin A (e.g., from beta-carotene) and asa prevention agent for cancer and heart disease (e.g. lycopene). Inaddition, carotenoids add color to foods and beverages (e.g. orangejuice). And in addition, carotenoids are the precursors of manyimportant chemicals responsible for the flavor of foods and thefragrance of flowers.
Texas A&M Forest Service - Trees of Texas - How Trees Grow
Algae of other groups usually have two flagella (singular: flagellum). Reproduction may be isogamous, anisogamous, or oogamous. Female gametangia are not enclosed by a wall of sterile cells as in higher cryptogams. Mostly autotrophic (photosynthetic), pigments very variable and are the basis of classification; all have chlorophyll a; some have b, others c; all have accessory pigments of some kind e.g. phycocyanin (blueish), phycoerythrin (reddish), carotenes (yellow-brown), xanthophylls (brown, notably fucoxanthin found in brown algae).
Carotene assists photosynthesis by transmitting energy from absorbed light to
Dietary carotene is converted to Vitamin A in the liver of animals, which are unable to synthesise their own, and becomes concentrated in fat and where it acts as an antioxidant.
Essay on Algae - Your Article Library
The human intake of carotenoids may be appreciated using databases such as that establlished for Swiss vegetables ().
Carotenoids are important components of the light harvesting in plants, expanding the absorption spectra of photosynthesis.
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