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For other uses, see Portosín.
General structure of portosins, with R1 being O-CH3, R2 being O-CH3, OH or H, R3 being glucose, coumaroylglucose or acetylglucose and R4 being catechin, phenol or a procyanidin dimer.

Portosins are vinyl pyranoanthocyanins, a type of blueish phenolic pigments, found in aged port wine. [1]

See also

References

  1. ^ Mateus, N; Oliveira, J; Haettich-Motta, M; De Freitas, V (2004). "New Family of Bluish Pyranoanthocyanins". Journal of Biomedicine & Biotechnology. 2004 (5): 299–305. doi: 10.1155/S1110724304404033. PMC  1082895. PMID  15577193.


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