Dietary flavonoids reduce the risk macular degeneration
What are flavonoids?
Flavonoids (or bioflavonoids) are a class of plant and fungus secondary metabolites.Chemically, flavonoids have the general structure of a 15-carbon skeleton, which consists of two phenyl rings and heterocyclic ring .
What are the function of Flavonoids?
Flavonoids are widely distributed in plants, fulfilling many functions. Flavonoids are the most important plant pigments for flower coloration. THey producing yellow or red/blue pigmentation in petals designed to attract pollinator animals. In higher plants, flavonoids are involved in UV filtration, symbiotic nitrogen fixation and floral pigmentation. They may also act as chemical messengers, physiological regulators, and cell cycle inhibitors.
What are the types of flavonoids?
Flavonoids are classified into:
- flavonoids or bioflavonoids
What are the dietary sources of flavonoids?
Foods with a high flavonoid content are –
- Blueberries and other berries,
- Black tea,green tea
- All citrus fruits,
- Dark chocolate (with a cocoa content of 70% or greater).
What are the health benefits of flavonoids?
Dietary flavonoid intake is associated with reduced gastric carcinoma risk in women, and reduced aerodigestive tract cancer risk in smokers.
Flavonoids have also been proposed to inhibit the pro-inflammatory activity of enzymes involved in free radical production, such as cyclooxygenase, lipoxygenase or inducible nitric oxide synthase, and to modify intracellular signaling pathways in immune cells,or in brain cells after a stroke.
Flavonoids has activity to fight against infection and bacteria . It also helps to increase the effect of antibiotics acting against bacterial infection.
Flavonoids have been shown to have direct antibacterial activity, synergistic activity with antibiotics, and (c) the ability to suppress bacterial virulence factors in studies.
What is the effect of flavonoids on eye?
Recent studies suggest an independent and protective association between dietary intake of flavonoids and the likelihood of having age-related macular degeneration (AMD) risk and progression.
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