Potassium sorbate

Potassium sorbate is the potassium salt of sorbic acid. It is a naturally occurring compound found in some fruits, but is typically manufactured synthetically for food use. It is produced by neutralising sorbic acid with potassium hydroxide.

Potassium sorbate is primarily used as a preservative to inhibit the growth of mould, yeast, and fungi in foods. It is effective in acidic conditions and is commonly added to products such as soft drinks, salad dressings, baked goods, and dairy products to extend shelf life.

Potassium sorbate is an authorised food additive in Great Britain, listed on the Register of Food Additive Authorisations. Both EFSA and JECFA have evaluated potassium sorbate. It is generally considered safe at typical intake levels, with JECFA having previously established an acceptable daily intake. Some individuals may experience mild allergic reactions or sensitivities, such as skin rashes or digestive upset, though this is uncommon.