METHOD FOR ENHANCING REBAUDIOSIDE D SOLUBILITY IN WATER Russian patent published in 2017 - IPC A23L27/30 

FIELD: chemistry.

SUBSTANCE: method of enhancing solubility of Reb D in aqueous-based liquids comprises preparing a clear Reb D solution by adding Reb D powder to water and heating to completely dissolve Reb D powder, or by extracting Reb D from stevia plant using hot/boiling water or water/ethanol. Temperature of a clear Reb D solution is maintained above 70 °C, concentration of Reb D in clear solution is less than 3 wt%. Method includes mixing clear Reb D solution with a solubilizing enhancer. Temperature of enhanced Reb D solution is maintained above 70 °C. Solubilizing enhancer is a water-soluble salt of an organic acid, water-soluble organic acid or a hydroxyl-containing sweetener. Stabilizer is added to enhanced Reb D solution to produce stabilized Reb D solution. Stabilizer contains a thickener or an agglomeration agent. Stabilized Reb D solution is subjected to spray-drying to produce powder.

EFFECT: higher solubility of Reb D in aqueous liquids, particularly in concentrates for preparation of beverages and syrups.

24 cl, 1 tbl, 18 ex