E341iii - Tricalciumphosphat

Origin

Tricalcium phosphate (TCP), also known as tribasic calcium phosphate or bone phosphate of lime (BPL), is an inorganic compound with the chemical formula Ca₃(PO₄)₂. It is a calcium salt of phosphoric acid. It occurs naturally in several forms and is a major component of bone mineral and tooth enamel. Commercially, it is produced from mined phosphate rock, which is then processed to remove impurities and convert it into a purified form of tricalcium phosphate. Different crystalline forms exist, including alpha and beta forms, with varying properties.

Usage

Tricalcium phosphate has a wide range of applications in the food industry. It is commonly used as an anti-caking agent in powdered foods, preventing clumping and ensuring free flow. It is also used as a source of calcium in food fortification, particularly in products like cereals, baked goods, and beverages. Furthermore, it functions as a buffering agent to control acidity and improve the stability of food products. In some applications, it serves as a dough conditioner in baking. In pharmaceuticals, it is used as a dietary supplement and as a component in some antacids. It is also used in ceramics and bone grafting materials.

Side Effects

Tricalcium phosphate is generally recognized as safe (GRAS) by regulatory agencies like the FDA when used in accordance with good manufacturing practices. The Joint FAO/WHO Expert Committee on Food Additives (JECFA) has established an acceptable daily intake (ADI) 'not specified', meaning that at the levels used in food, it does not pose a health risk. However, excessive consumption of calcium from any source, including tricalcium phosphate, may lead to hypercalcemia in susceptible individuals. Symptoms of hypercalcemia can include nausea, vomiting, constipation, and in severe cases, kidney problems. Individuals with pre-existing kidney conditions should exercise caution when consuming foods high in calcium. Allergic reactions to tricalcium phosphate are rare.