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Exposure to oxygen during production may improve wine, but the exposure must be limited: too much oxygen can lead to oxidation while too little can lead to reduction, either one leading to its associated wine faults. In barrel aging, the natural properties of the wood allow for gentle aeration of the wine
The mass difference between equivalent volumes of must and water is almost entirely due to the dissolved sugar in the must. Since the alcohol in wine is produced by fermentation of the sugar, the Oechsle scale is used to predict the maximal possible alcohol content of the finished wine. This measure is commonly used to select when to harvest ...
In wine tasting, humans are least sensitive to the taste of sweetness (in contrast to sensitivity to bitterness or sourness) with the majority of the population being able to detect sugar or "sweetness" in wines between 1% and 2.5% residual sugar. Additionally, other components of wine such as acidity and tannins can mask the perception of ...
The natural occurrence of fermentation means it was probably first observed long ago by humans. [3] The earliest uses of the word "fermentation" in relation to winemaking was in reference to the apparent "boiling" within the must that came from the anaerobic reaction of the yeast to the sugars in the grape juice and the release of carbon dioxide.
Wine is a complex mixture of chemical compounds in a hydro-alcoholic solution with a pH around 4. The chemistry of wine and its resultant quality depend on achieving a balance between three aspects of the berries used to make the wine: their sugar content, acidity and the presence of secondary compounds.
A relative density saccharometer in a sugar solution, 1040 g/L. Baumé scale (Bé°): Occasionally used in France and by U.S. brewers. Oechsle scale (°Oe): Used in Germany, Luxemburg and Switzerland. It is an important part of the German wine classification. Relative density: Used in the United States (although Brix is sometimes used).
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A Spanish sparkling Cava with its sweetness level (semi-seco) listed on the labelAmong the components influencing how sweet a wine will taste is residual sugar. It is usually measured in grams of sugar per litre of wine, often abbreviated to g/L. Residual sugar typically refers to the sugar remaining after fermentation stops, or is stopped, but it can also result from the addition of ...