Pyranoanthocyanin

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The pyranoanthocyanins are a type of pyranoflavonoids. They are chemical compounds formed in red wines by yeast during fermentation processes[1] or during controlled oxygenation processes[2] during the aging of wine.[3] The different classes of pyranoanthocyanins are carboxypyranoanthocyanins, methylpyranoanthocyanins, pyranoanthocyanin-flavanols, pyranoanthocyanin-phenols, portisins, oxovitisins and pyranoanthocyanin dimers; their general structure includes an additional ring (formed between the OH group at C-5 and the C-4 of the anthocyanin pyranic ring) that may have different substituents linked directly at C-10.[4]

Examples

Vitisin A type

Vitisin B type

Oxovitisins

Oxovitisins are pyranone-anthocyanin derivatives[8]

Pinotin type

Flavanyl-pyranoanthocyanin type

References

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See also

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  8. Oxovitisins: A New Class of Neutral Pyranone-anthocyanin Derivatives in Red Wines. Jingren He, Joana Oliveira, Artur M. S. Silva, Nuno Mateus and Victor De Freitas, J. Agric. Food Chem., 2010, 58 (15), pages 8814–8819, doi:10.1021/jf101408q
  9. Oxidative formation and structural characterisation of new α-pyranone (lactone) compounds of non-oxonium nature originated from fruit anthocyanins. Jingren He, Artur M.S. Silva, Nuno Mateus and Victor de Freitas, Food Chemistry, Volume 127, Issue 3, 1 August 2011, pages 984–992, doi:10.1016/j.foodchem.2011.01.069
  10. Anthocyanins and Their Variation in Red Wines II. Anthocyanin Derived Pigments and Their Color Evolution. Fei He, Na-Na Liang, Lin Mu, Qiu-Hong Pan, Jun Wang, Malcolm J. Reeves and Chang-Qing Duan, Molecules, 2012, 17, pages 1483-1519, doi:10.3390/molecules17021483