Page 38 - Academic Press Encyclopedia of Physical Science and Technology 3rd BioChemistry
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 Encyclopedia of Physical Science and Technology  EN006C-254  June 28, 2001  19:52







               110                                                                                      Food Colors




                                  TABLE II Major Classes of Flavonoids
                                        Class              Structure         Example (source)
                                  Flavones                                 Apigenin (chamomile)






                                  Flavan-3-ols (catechins)                 (−)-Epicatechin (cocoa)




                                  Flavan-3, 4-diols                        Leucocyanidin (peanut)






                                  Flavanones                               Naringenin, hesperidin
                                                                             (citrus fruits)




                                  Flavonols                                Quercetin (apples, grapes)






                                  Flavanonols                              Taxifolin (Prunus)






                                  Isofiavones                               Genistein (soybeans)




                                  Anthocyanidins                           Pelargonidin, cyanidin,
                                                                             delphinidin (berries,
                                                                             red apples, red grapes)


                                  Chalcones                                Butein (Butea)






                                  Aurones                                  Aureusidin (Oxalis)
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