Huber, Verena and Muller, Laurie and Degot, Pierre and Touraud, Didier and Kunz, Werner (2021) NADES-based surfactant-free microemulsions for solubilization and extraction of curcumin from Curcuma Longa. FOOD CHEMISTRY, 355: 129624. ISSN 0308-8146, 1873-7072
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A choline chloride + lactic acid (1:1) natural deep eutectic solvent (NADES) is used as an adjuvant to ethanol/ triacetin mixtures to solubilize and extract curcumin from Curcuma Longa. The obtained NADES/ethanol/triacetin mixtures are homogeneous, transparent and of low viscosity even in the absence of water. Dynamic light scattering revealed significant nanostructures, typical of surfactant-free microemulsions. A twofold increase of curcumin solubility and remarkable extraction power (yield of similar to 90%) can be achieved in the ternary system including the NADES, although curcumin is hydrophobic and the used NADES are very polar. Due to the elevated solubility of curcumin, more extraction cycles can be made than in the previously published aqueous systems with the same amount of solution. As a result, less solvent is required to achieve the same extraction yield.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | DEEP EUTECTIC SOLVENTS; GREEN EXTRACTION; Curcumin; NADES; Surfactant-free microemulsions; Solubilization; Extraction; Green chemistry; Food; Water-free SFME |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie > Chair of Chemistry VI - Physical Chemistry (Solution Chemistry) > Prof. Dr. Werner Kunz |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 28 Jul 2022 06:28 |
| Last Modified: | 28 Jul 2022 06:28 |
| URI: | https://pred.uni-regensburg.de/id/eprint/45965 |
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