Profisetinidin

A profisetinidin is a type of condensed tannins formed from leuco-fisetinidin, the leucoanthocyanidin form of fisetinidin.

Mimosa and quebracho tannins are, according to a comparative ¹³C NMR study of polyflavonoids, found to be predominantly profisetinidin/prorobinetidin-type tannins.^[1]

The expected masses found in mass spectrometry in quebracho tannin are 561, 833, 1105, 1377, 1393, 1651, 1667. Quebracho also yields gallic acid.

^ Rahim, Afidah A.; Rocca, Emmanuel; Steinmetz, Jean; Jain Kassim, M.; Sani Ibrahim, M.; Osman, Hasnah (March 2008). "Antioxidant activities of mangrove Rhizophora apiculata bark extracts". Food Chemistry. 107 (1): 200–207. doi:10.1016/j.foodchem.2007.08.005.

[1] Rahim, Afidah A.; Rocca, Emmanuel; Steinmetz, Jean; Jain Kassim, M.; Sani Ibrahim, M.; Osman, Hasnah (March 2008). "Antioxidant activities of mangrove Rhizophora apiculata bark extracts". Food Chemistry. 107 (1): 200–207. doi:10.1016/j.foodchem.2007.08.005.

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