Degot, Pierre and Huber, Verena and Hofmann, Evamaria and Hahn, Maximilian and Touraud, Didier and Kunz, Werner (2021) Solubilization and extraction of curcumin from Curcuma Longa using green, sustainable, and food-approved surfactant-free microemulsions. FOOD CHEMISTRY, 336: 127660. ISSN 0308-8146, 1873-7072
Full text not available from this repository. (Request a copy)Abstract
Curcumin is a powerful coloring agent widely used in the food industry. Its extraction from the plant Curcuma longa is commonly done with aqueous solvent solutions. In contrast to the conventional extraction methods, the present study aimed to compare two different green and bio-based surfactant-free microemulsion (SFME) extraction systems, which are approved for food and yield a higher extracting power of curcuminoids. Two SFMEs, water/ethanol/triacetin and water/diacetin/triacetin, were investigated via dynamic light scattering. Curcumin solubility in binary mixtures consisting of ethanol/triacetin or diacetin/triacetin was studied both experimentally and theoretically using UV-Vis measurements and COSMO-RS. The SFMEs were further examined and compared to a common ethanol/water (80/20) extraction mixture with respect to their extracting ability using high performance liquid chromatography. The SFMEs containing ethanol were found to extract similar to 18% more curcuminoids than the SFMEs containing diacetin and similar to 53% more than the ordinary ethanol/water mixture.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ASSISTED EXTRACTION; HPLC METHOD; CHEMISTRY; PIGMENTS; SOLVENT; MODEL; CO2; Curcumin; Surfactant-free microemulsions; Extraction; COSMO-RS; Green chemistry; Food |
| 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: | 07 Jul 2022 09:50 |
| Last Modified: | 07 Jul 2022 09:50 |
| URI: | https://pred.uni-regensburg.de/id/eprint/45944 |
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