Definition:

Calcium L-threonate is a deep-processed product of vitamin C. Since calcium L-threonate is a four-carbon polyhydroxy compound, the formed calcium L-threonate is a complex with a moderate molecular size. It is water soluble and has a certain degree of fat solubility, which makes it easy to be recognized by the intestinal mucosa and can be directly absorbed in the form of complex molecules to achieve a high absorption rate. The pH value of the aqueous solution of calcium L-threonate is almost neutral, and it does not have any irritation to the stomach and intestines. It does not consume gastric acid during the absorption process and does not require vitamin D fortification. Various research results show that calcium L-threonate is different from other calcium agents in the absorption mechanism. It is a type of calcium source with passive diffusion as the main absorption process, and is a new type of food additive.

Composition:

Physical and chemical properties:

White particles, almost odorless, tasteless, soluble in water, soluble in hot water, insoluble in alcohol, ether and chloroform. The melting point is higher than 330°C (decomposition), with good acid and alkali resistance, and strong thermal stability. There is no change when heated at 120°C for 20 minutes or at 200°C for 10 minutes.

Melting point: >300℃

　　 Boiling point: 518.9°C at 760 mmHg

　　 Flash point: 281.7°C

　　 Vapor pressure: 6.17E-13mmHg at 25°C

Application fields: nutrition enhancer, calcium supplement. Calcium L-threonate is an important substance in the metabolism of vitamin C in the body and has the effect of promoting the absorption of vitamin C. Pharmacodynamic experiments have proved that calcium L-threonate can increase bone calcium, bone density and bone strength, and can reverse the animal’s negative calcium balance. Most of the calcium L-threonate can be absorbed through passive diffusion of the intestinal mucosa, which is an unsaturated absorption process. The passive absorption of calcium is directly proportional to the intake, the more intake, the more absorption. Calcium that enters the plasma through passive molecular diffusion exists in the form of small molecules, which increases the total blood calcium concentration and increases the proportion of small molecules in the total calcium, that is, relatively prolongs the calcium metabolism time in the plasma. The medium-molecular calcium salt has a moderate ability to dissociate calcium ions, which not only prolongs the metabolism time, but also allows sufficient time for blood calcium to metabolize with bone calcium, so it has high bioavailability and good calcium supplementation.