IN194592: A process for the preparation curcuminoids mixture from spent turmeric oleoresin

A process for the preparation of curcuminoids mixture from spent turmeric oleoresin, which comprises: i. extracting the Curcumin Removed Turmeric Oleoresin (CRTO) with apolar solvents such as herein described for 10-30 min at temperature 30-60°C, ii. filtering using known method to collect the residue, iii. extracting the residue with a medium polar solvents at a temperature ranging between 30-70°C for 20-30 min, iv. concentrating the filtrate obtained in step (iii) to reduce the volume ranging from 20-80% of original volume, v. precipitating out the curcuminoids using an apolar solvent such as herein described, vi. separating the curcuminoids by filtration, vii. removing the solvent residue under vacuum at 60-80°C under 10-25 mm of mercury to get curcuminoids in powder form.