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Potassium sorbate is the potassium salt of sorbic acid, a naturally occurring organic compound. It is typically produced industrially through a chemical reaction involving potassium hydroxide and sorbic acid. It appears as a white crystalline powder or granules.

Potassium sorbate is used as a preservative to inhibit the growth of mold, yeast, and fungi in foods. This helps extend the shelf life of products. It is commonly found in baked goods, cheese, wine, yogurt, dried fruits, and beverages.

Potassium sorbate is generally recognized as safe (GRAS) by the FDA for use as a food preservative. International bodies like JECFA and EFSA have also evaluated potassium sorbate and established acceptable daily intake levels. While some individuals may experience mild allergic reactions or sensitivities, scientific reviews have not found significant health concerns associated with its consumption at typical dietary levels.