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Curcumin extracts from Curcuma Longa – Improvement of concentration, purity, and stability in food-approved and water-soluble surfactant-free microemulsions

Degot, Pierre ; Huber, Verena ; Touraud, Didier ; Kunz, Werner


Curcumin was extracted from Curcuma Longa employing a green, bio-based, and food-agreed surfactant-free microemulsion (SFME) consisting of water, ethanol, and triacetin. Concerning the high solubility of curcumin in the examined ternary mixtures, it was attempted to produce highly concentrated tinctures of up to a total of similar to 130 mg/mL curcuminoids in the solvent by repeatedly extracting ...


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