what is used in wine as a preservative?
Preservative free wine and the use of sulphur dioxide is, however, an expansive and contentious topic and getting to the bottom of it can feel like trying to crack the Da Vinci Code. Preservative free wine is a really a misnomer. This is because no wines are truly âpreservative freeâ as some sulphur dioxide will always be released during fermentation and acts as a natural preservative. The term âpreservative freeâ is often used to mean that no preservatives have been added during the wine making process.
No-Added-Sulfites Wine. Sulfites in wine are chemicals used as preservatives to prevent browning and discoloration in foods and drinks. For wine making, sulfites, also known as sulphites, have been used for centuries. Sulfites within the range of six and 6,000 ppm can be found in everyday foods: canned tuna, pizza dough, jams, gelatin, trail mix, cheese, deli meat and even prescription pills.