Sugars in wine Sugars in wine Sugars in wine are at the heart of what makes winemaking possible. During the process of fermentation, sugars from wine grapes are broken down and converted by yeast into alcohol (ethanol) and carbon dioxide. Grapes accumulate sugars as they grow on the grapevine through the translocation of sucrose molecules that are produced by photosynthesis from the leaves. During ripening the sucrose molecules are hydrolyzed (separated) by the enzyme invertase into glucose and fructose. By the time of harvest, between 15 and 25% of the grape will be composed of simple sugars. Both glucose and fructose are six-carbon
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