Phenolic content in wine - quercetin. Like other flavonoids, the concentration of flavonols in the grape berries increases as they are exposed to sunlight. Some viticulturalists will use measurement of flavonols such as quercetin as an indication of a vineyard's sun exposure and the effectiveness of canopy management techniques. Anthocyanins are phenolic compounds found throughout the plant kingdom, being frequently responsible for the blue to red colors found in flowers, fruits and leaves. In wine grapes, they develop during the stage of "veraison" when the skin of red wine grapes changes color from green to red to black. As the sugars in the grape
Wine from the United Kingdom jelly. The term British wine is used to describe a drink made in Britain by the fermentation of grape (or any other fruit) juice or concentrate originating from anywhere in the world. It cannot be used for :wine in the legal sense, which must be produced from freshly pressed grapes. The most common style is a medium or sweet high-strength wine that is similar to sherry, and was formerly known as British Sherry. The Romans introduced winemaking to England, and even tried to grow grapes as far north as Lincolnshire. Winemaking continued at least down to the time of the