Firming agent

Firming agents are substances that are added to foods to maintain or improve their texture, particularly in processed fruits and vegetables. They work by reacting with naturally occurring pectins in the food, forming a gel-like structure that helps the food retain its shape and firmness during processing and storage. Common firming agents include calcium salts, such as calcium chloride and calcium lactate.

Manufacturers add firming agents to prevent foods from becoming too soft or mushy, especially during canning or cooking. They are frequently used in canned fruits and vegetables, such as tomatoes, potatoes, and fruit pieces, to ensure they retain their desired texture. They can also be found in some jams, jellies, and pickled products.

Firming agents like calcium chloride and calcium lactate are authorised food additives in Great Britain and are listed on the Register of Food Additive Authorisations. They are generally considered safe when consumed as part of a balanced diet. These substances are naturally occurring in many foods and are essential minerals.