Wine color practice of saignée (exposing wine to red grape skins for only a short period of time in order to give it a lighter feel closer to that of white wine) or by blending a white wine with a red wine. The presence of a complex mixture of anthocyanins and procyanidins can increase the stability of color in wine. As it ages, the wine undergoes chemical autoxidation reactions involving acetaldehyde of its pigments molecules. The newly formed molecules are more stable to the effect of pH or sulfite bleaching. The new compounds include pyranoanthocyanins like vitisins (A and B), pinotins and
The Oxford Companion to Wine The Oxford Companion to Wine The Oxford Companion to Wine (OCW) is a book in the series of Oxford Companions published by Oxford University Press. The book provides an alphabetically arranged reference to wine, compiled and edited by Jancis Robinson, with contributions by several wine writers including Hugh Johnson, Michael Broadbent, and James Halliday, and experts such as viticulturist Richard Smart and oenologist Pascal Ribéreau-Gayon. The contract for the first edition was signed in 1988, and after five years of writing it was published in 1994. The second edition was published in 1999 and the third in 2006. The fourth