Ionic liquid as hydrogen bond acceptor in the extraction of nutritional natural products. (30th June 2023)

• Record Type: Journal Article
• Authors: Xiao, Zhixin; Liu, Min; Bi, Wentao; Chen, David Da Yong
• Is Part Of: Food chemistry. Volume 412(2023)
• Publication Date: 2023-06-30
• Subjects: Ionic liquid -- Deep eutectic solvent -- Deep eutectic system -- Mechanochemical extraction -- Natural product; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2023.135589
• Languages: English
• ISSNs: 0308-8146

Abstract

Graphical abstract: Highlights: Ionic liquid extraction is similar to deep eutectic solvent with formation of deep eutectic system. Hydrogen bond interaction was the principle driving force of IL and DES based extraction. Ionic liquid direction formation of a deep eutectic system improves extraction efficiency. More insights into extraction mechanisms for nutritional compound extractions. Abstract: In-depth studies of the extraction mechanism using deep eutectic solvents (DES), especially extraction through the formation of a deep eutectic system (DESys), revealed commonalities between the DES- and ionic liquids (IL)-based extraction systems. New applications of ILs and DES for extraction of nutritional natural products were presented. In this study, the extraction behavior of choline chloride (ChCl) and 1-(2-hydroxyethyl)-3-methylimidazolium chloride ([HMIm][Cl]) in DES and IL, respectively, in mechanochemical extraction of target compounds from Moringa oleifera leaves was systematically studied. The results suggested that both extraction methods were based on the formation of a DESys, either a normal DESys or an IL DESys. Considering the DESys-based one-step extraction improves the extraction efficiency and reduces the preparation time, the same idea can be used in IL for performance improvement. By formation of a new IL deep eutectic system based on hydrogen bond interaction in extraction, similar improvement was obtained.