Coutaric acid explained

Coutaric acid is a hydroxycinnamoyltartaric acid found in wine, pomace^[1] and grape.^[2] It is an ester formed from coumaric acid and tartaric acid.

Notes and References

1. Maier . T. . Sanzenbacher . S. . Kammerer . D. R. . Berardini . N. . Conrad . J. R. . Beifuss . U. . Carle . R. . Schieber . A. . 10.1016/j.chroma.2006.06.082 . Isolation of hydroxycinnamoyltartaric acids from grape pomace by high-speed counter-current chromatography . Journal of Chromatography A . 1128 . 1–2 . 61–67 . 2006 . 16860334.
2. Singleton . V. L. . Zaya . J. . Trousdale . E. K. . 10.1016/0031-9422(86)80078-4 . Caftaric and coutaric acids in fruit of Vitis . Phytochemistry . 25 . 9 . 2127 . 1986 .