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Anthocyanidin absorption maxima

Table 18.22. Anthocyanidins absorption maxima in the visible spectrum... Table 18.22. Anthocyanidins absorption maxima in the visible spectrum...
By definition procyanidins and anthocyanogens, on treatment with acid, give anthocyanidins which show maximum light absorption at about 545 nm. By measurement at 455 nm estimates of the amount of catechin present can also be obtained [51]. The yield of anthocyanidin from different procyanidin fractions varies and anthocyanogen values do not correlate with the shelf life of beers. In many cases the yield of anthocyanidin released by add decreases as the procyanidins polymerize while the level of total polyphenols (EBQ remains roughly constant. Accordingly the... [Pg.409]

Table 6. Maximum absorption wavelength and molar extinction coefficients of anthocyanidins... Table 6. Maximum absorption wavelength and molar extinction coefficients of anthocyanidins...
See other pages where Anthocyanidin absorption maxima is mentioned: [Pg.247]    [Pg.479]    [Pg.222]    [Pg.135]    [Pg.831]    [Pg.107]    [Pg.265]    [Pg.151]    [Pg.264]   
See also in sourсe #XX -- [ Pg.830 ]



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