The different flavonoids have diverse biological functions, including protection against ultraviolet uv radiation and phytopathogens, signaling during nodulation, male fertility, auxin transport, as well as the coloration of flowers as a visual signal that attracts pollinators. A estos beneficios debemos sumarle otro igualmente relacionado. Although results from different studies have demons trated that flavonoids can act as prooxidant at very. Asterceas, fabceas, rubiceas, umbelferas, apocinceas, apiceas y rutceas. Etude analytique et biologique des flavonoides naturels. Conjugate ringclosure of chalcones results in the familiar form of flavonoids, the threeringed. Biosynthesis, biological functions and biotechnological applications article pdf available in frontiers in plant science 3222. The elucidation of the biosynthetic pathways, as well as their regulation by myb, basic helixloophelix bhlh, and wd40type transcription factors, has allowed metabolic engineering of plants through the manipulation of the different final products with valuable applications. Flavonoides y sus acciones antioxidantes medigraphic. Files are available under licenses specified on their description page. Flavonoids are synthesized by the phenylpropanoid metabolic pathway in which the amino acid phenylalanine is used to produce 4coumaroylcoa. Free radicals and ros have been implicated in a large number of human diseases,14. A biossintese ocorre atraves da combinacao dos acidos chiquimico e acilpolimalonato. This can be combined with malonylcoa to yield the true backbone of flavonoids, a group of compounds called chalcones, which contain two phenyl rings.
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