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Carbon dioxide gas dissolved in the water content of wine. It is a volatile acid that held in equilibrium with the dissolved carbon dioxide gas and can not be isolated in a pure form. Carbonic gas A natural by product of the fermentation process in which yeast cells convert sugar into nearly equal parts alcohol and carbonic gas. While a small ...
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.
Varies by region. In the UK, a very sweet, low alcohol wine. In the US by law, any wine containing over 14.1% alcohol. DO 1. The abbreviation for Denominación de Origen, or "place name". This is Spain's designation for wines whose name, origin of grapes, grape varieties and other important factors are regulated by law. 2.
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As a single-cell organism, S. cerevisiae is small with a short generation time (doubling time 1.25–2 hours [40] at 30 °C or 86 °F) and can be easily cultured. These are all positive characteristics in that they allow for the swift production and maintenance of multiple specimen lines at low cost.
Gram-positive cells have a thick layer of peptidoglycan in the cell wall that retains the primary stain, crystal violet. Gram-negative cells have a thinner peptidoglycan layer that allows the crystal violet to wash out on addition of ethanol. They are stained pink or red by the counterstain, [3] commonly safranin or fuchsine.
A good glass of Merlot is one of the greatest pleasures in life—until it ends up on your light-colored carpet or favorite shirt. These expert strategies for red wine stain removal will help you ...
Autolysis in winemaking relates to the complex chemical reactions that take place when a wine spends time in contact with the lees, or dead yeast cells, after fermentation. While for some wines - and all beers [ 1 ] - autolysis is undesirable, it is a vital component in shaping the flavors and mouth feel associated with premium Champagne ...