Process for the preparation of calcium salt suspensions

A process to prepare an aqueous suspension of calcium salt particles with particle size below 10 μm comprising the stages of:

• a) adding compressed carbon dioxide in subcritical, critical, or supercritical state to a calcium salt suspension in a container at pressure between 6.8 and 122.4 atmospheres and temperature between 10 and 40° C. for a time ranging between 0.5 and 2 hours;
• and
• b) passing the compressed solution through a nozzle between 50 and 150 μm in diameter and 0.25 to 6 mm long, wherein a ratio between length and diameter is between 5 and 80, to generate the salt precipitation in the aqueous medium.

A method to incorporate calcium salts with particle size below 10 μm in water, carbonated beverages, juices, dairy drinks, soups, or any other types of nutritional, nutraceutical, or pharmaceutical beverages by increasing the calcium salt solubility in the beverage up to 200 times the value of the solubility at room temperature and atmospheric pressure comprising the stages of:

• a) adding compressed carbon dioxide in sub-critical, critical, or super-critical state to a beverage that contains one or more calcium salts with particle size above 30 μm in a container at pressure between 6.8 and 122.4 atmospheres and temperature between 10 and 40° C. for a time ranging between 0.5 and 2 hours;
• and
• b) suddenly passing the compressed solution through a nozzle between 50 and 150 μm in diameter and 0.25 to 6 mm long, to depressurize the solution at constant temperature and pressure which are equal to the solubilization conditions from stage a) to generate calcium salt micro- or nano-particles in suspension in the beverage.