What is the role of sulfites in wine?

Sulfites play a crucial role in wine production primarily as preservatives. Their main function is to prevent oxidation, which can spoil the wine and affect its quality. By inhibiting the growth of unwanted bacteria and yeasts, sulfites help maintain the wine's intended flavor profile and freshness over time. Oxidation can lead to undesirable changes in color and taste, making sulfites an important additive for ensuring the longevity and stability of the wine.

While oxygen can enhance certain wine characteristics during fermentation and aging, excessive exposure is detrimental. By preventing oxidation, sulfites allow winemakers to produce cleaner, more stable wines that can be aged longer without losing their qualities. Understanding the role of sulfites is essential for anyone involved in wine production or sales, as their use is a key aspect of achieving the desired quality and consistency in wine.