Wakeman, Nellie A. (Nellie Antoinette) · Madison : University of Wisconsin · leaf 111
gned the formula C20H20O10. Gautier4 made several investigations of the coloring matter of grapes, continuing his studies for a number of years. Gautier traced a close relationship between the grape pigment and the tannins. Willstaetter,5 in 1915, found the pigment to exist in the form of the… … 1 Die Chemie des Wines, 44, p. 228. 2 Le Travail des Vins. 3C. r., 47, p. 268; Ann. Chim. Phys., (3) 54, p. 366. 4C. r.f 86., p. 1507; 87, p. 64; 114, p. 623. * Ann. 408, p. 87.
Pigments · Plants
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