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While the back of a wine bottle may say “contains sulfites,” only bottles that contain more than 10 parts per million of sulfites must carry this label, per the U.S. Food and Drug ...
Without sulfites, grape juice would quickly turn to vinegar. [4] Organic wines are not necessarily sulfite-free, but generally have lower amounts and regulations stipulate lower maximum sulfite contents for these wines. In general, white wines contain more sulfites than red wines and sweeter wines contain more sulfites than drier ones. [5]
Acid is widely used as a preservative. In red wine, Sulfurous anhydride or sulfur dioxide (SO2), in particular, is the most frequently used source. [4] Acid protects wine from bacteria by regulating the pH value, which affects the growth and vitality of yeast during fermentation. [2] Acidity also directly affects color, balance and taste. [2]
Some wines may be exempt from including a sulfite warning. Wines that have under 10mg/L of sulfites do not need to be labeled that they contain sulfites. This includes added and natural sulfites, like sulfites that come from the soil, or those produced by yeasts during alcoholic fermentation.
Methods for making alcohol-free wine bottles have greatly improved in recent years [BBC] In the past – and still today for cheaper brands – the method has simply been to boil away the alcohol ...
A space-filling model of the sulfite anion. Sulfites or sulphites are compounds that contain the sulfite ion (systematic name: sulfate(IV) ion), SO 2− 3. The sulfite ion is the conjugate base of bisulfite. Although its acid (sulfurous acid) is elusive, [1] its salts are widely used. Sulfites are substances that naturally occur in some foods ...
Terroir-France:AOC list, sorted by region; Arrêté du 19 juillet 2004 relatif à la composition des comités régionaux vins et eaux-de-vie de l'Institut national des appellations d'origine (in French) Europa.eu: Wine sector: List of quality wines produced in specified regions
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