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Solubilization and extraction of curcumin from Curcuma Longa using green, sustainable, and food-approved surfactant-free microemulsions

descriptionPublicationkeyboard_double_arrow_right Article , Journal 01 Jan 2021Publisher:Elsevier BVJournal:Food Chemistry, volume 336, page 127,660 (issn: 0308-8146,

Authors: Pierre Degot; Verena Huber; Evamaria Hofmann; Maximilian Hahn; Didier Touraud; Werner Kunz;

doi: 10.1016/j.foodchem.2020.127660

pmid: 32771898

Solubilization and extraction of curcumin from Curcuma Longa using green, sustainable, and food-approved surfactant-free microemulsions

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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 ~18% more curcuminoids than the SFMEs containing diacetin and ~53% more than the ordinary ethanol/water mixture.

Related Organizations

University of Regensburg
Germany

Keywords

Curcumin, Ethanol, Plant Extracts, Water, Green Chemistry Technology, Dynamic Light Scattering, Surface-Active Agents, Curcuma, Solubility, Diarylheptanoids, Solvents, Emulsions, Spectrophotometry, Ultraviolet, Triacetin, Chromatography, High Pressure Liquid

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	citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	78
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	influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	Top 10%
	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Top 1%