Figure 4.
MALDI-TOF spectra of the insoluble-bound polyphenol from guarana powder. (A) 200–1400 Da. 1: Monomers peaks cluster; 2: Dimers peaks cluster; 3: Trimer peaks cluster; 4: Tetramer peaks cluster. (B) 700–4700 Da. 5: Pentamers peaks cluster.
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