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Gallic acid catechu

Figure 3.4 UV spectra of common phenolic acids (top gallic acid bottom proto-catechuic acid). Figure 3.4 UV spectra of common phenolic acids (top gallic acid bottom proto-catechuic acid).
Wood pulp black liquors have been sampled directly from the processing vessel using SIA. The instrumentation automated the sample pretreatment and cleanup over an aluminum oxide minicolumn and then presented them to a high-performance liquid chromatography system for the determination of pyrocatechol, pyrogallol, gallic acid, and proto-catechuic acid. [Pg.4431]

X 3.9 nm, 5 xm), mobile phase and flow-rate same as in (a). Peaks 1) gallic acid, 2) proto-catechuic acid, 3) catechin, 4) caffeic acid, 5) sinapic acid, 6) rosmarinic acid. [Pg.1762]

In contrast to the TFG of tannin, the TFG of catechu (F. 9) shows no gallic acid and only very little pyrogallol. The well-defined zones of phloroglucinol (7),... [Pg.26]

See other pages where Gallic acid catechu is mentioned: [Pg.376]    [Pg.494]    [Pg.78]    [Pg.77]    [Pg.1303]    [Pg.265]    [Pg.39]    [Pg.832]    [Pg.463]    [Pg.327]    [Pg.427]    [Pg.512]    [Pg.548]    [Pg.158]   
See also in sourсe #XX -- [ Pg.158 ]



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