Abstract
Two unusual fumaric acid acylated peonidin-3-monoglucosides were fractionated and purified from the skins of the Koshu grape, native to Japan, as minor anthocyanin pigments. The differentiation of Koshu from Vitis vinifera and American species is discussed. Diglucoside pigments are absent; therefore, Koshu cannot be directly derived from V. labrusca or other American species or V. amurensis. The pigments are, nevertheless, different from those reported for V. vinifera.
- Received October 1987.
- Copyright 1988 by the American Society for Enology and Viticulture
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