Asterceas, fabceas, rubiceas, umbelferas, apocinceas, apiceas y rutceas. 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. 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. Free radicals and ros have been implicated in a large number of human diseases,14. Sep 28, 2012 more than 6000 different flavonoids have been identified, and surely this number will increase ferrer et al. Biosynthesis, biological functions and biotechnological applications article pdf available in frontiers in plant science 3222.
Flavonoids are synthesized by the phenylpropanoid metabolic pathway in which the amino acid phenylalanine is used to produce 4coumaroylcoa. Etude analytique et biologique des flavonoides naturels. Atividades biologicas dos flavonoides universidade fernando. Although results from different studies have demons trated that flavonoids can act as prooxidant at very. All structured data from the file and property namespaces is available under the creative commons cc0 license. Flavonoids are widely distributed secondary metabolites with different metabolic functions in plants. This can be combined with malonylcoa to yield the true backbone of flavonoids, a group of compounds called chalcones, which contain two phenyl rings. A estos beneficios debemos sumarle otro igualmente relacionado. Files are available under licenses specified on their description page. Conjugate ringclosure of chalcones results in the familiar form of flavonoids, the threeringed. A biossintese ocorre atraves da combinacao dos acidos chiquimico e acilpolimalonato. Quercetin, kaempferol, morin, myricetin and rutin, by acting as antioxidants, exhibited. The chemistry of flavonoids is complex and at first glance can be overwhelming.
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