A LCST-type ionic liquid used as the recyclable extractant for the extraction and separation of liquiritin and glycyrrhizic acid from licorice (Glycyrrhiza uralensis Fisch)

Wang, Lingqi; Chen, Xueying; Li, Jiajia; Tan, Zhijian

doi:10.1016/j.molliq.2021.117295

Cited by 9 publications

(7 citation statements)

References 47 publications

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“…The solvent with too strong hydrophobicity was not suitable for the extraction and concentration of Ast. In addition, the KAst began to decrease when the temperature was increased to 318.15 K. Although a higher temperature can speed up the molecular movement then increase the speed of penetration, diffusion and dissolution, higher temperature (more than 318.15K) increased the decomposition of Ast [43,47].…”

Section: Effect Of Temperaturementioning

confidence: 99%

Recovery of Astaxanthin from Antarctic Krill (Euphausia superba) Waste by Using Thermo-reversible Ionic Liquid-Water Systems: Phase Behavior, Extraction and Residue Utilization

Yu,

Li,

et al. 2024

Preprint

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Conventional extraction techniques to recover astaxanthin from shrimp waste usually rely on organic solvents. In this study, ionic liquids were used to form thermo-reversible biphasic systems with water, and the systems were applied to extract astaxanthin from antarctic krill waste. The phase diagrams and physicochemical properties of the systems were investigated. Then the extraction conditions were studied to obtain high astaxanthin yield. Moreover, the extraction mechanism was revealed and the storage stability of the extract was evaluated. Furthermore, the extraction residue was used as bio-adsorbent to remove organic dyes to maximize the utilization of shrimp waste. Results show the system formed by tetrabutylphosphonoium trifluoroacetate ([P4444]CF3COO) achieved highest extraction efficiency up to 35.78μg/g under optimal conditions (308.15K, solid-liquid ratio of 1:40, and extraction time of 75min) as compared with pure [P4444]CF3COO and ethanol. Astaxanthin tended to transfer into the IL-rich phase after the two-phase forming due to hydrogen bonding with [P4444]CF3COO. In addition, the shrimp shell residues with spongy and porous surface presented great removal of 92.6% for Congo red and 97.31% for methylene blue. The study provided a novel and efficiency method to recover astaxanthin from shrimp waste, and meanwhile prepared a biosorbent from the extracted residue.

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Section: Effect Of Temperaturementioning

confidence: 99%

Recovery of Astaxanthin from Antarctic Krill (Euphausia superba) Waste by Using Thermo-reversible Ionic Liquid-Water Systems: Phase Behavior, Extraction and Residue Utilization

Yu,

Li,

et al. 2024

Preprint

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“…A similar approach, based on biphasic IL/water systems with a reversible LCST, has been followed in later studies to extract a number of other proteins [ 167 ], but also simpler organic and biomolecules, fragrances, and cosmetics [ 168 ], as well as drug-like molecules [ 169 ]. Thermoresponsive IL are also promising in view of extracting oily species from microalgae for biodiesel production [ 170 ], or to remove noxious sulfur species from hydrocarbon fuels [ 171 ].…”

Section: Applicationsmentioning

confidence: 99%

Thermoresponsive Ionic Liquid/Water Mixtures: From Nanostructuring to Phase Separation

et al. 2022

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The thermodynamics, structures, and applications of thermoresponsive systems, consisting primarily of water solutions of organic salts, are reviewed. The focus is on organic salts of low melting temperatures, belonging to the ionic liquid (IL) family. The thermo-responsiveness is represented by a temperature driven transition between a homogeneous liquid state and a biphasic state, comprising an IL-rich phase and a solvent-rich phase, divided by a relatively sharp interface. Demixing occurs either with decreasing temperatures, developing from an upper critical solution temperature (UCST), or, less often, with increasing temperatures, arising from a lower critical solution temperature (LCST). In the former case, the enthalpy and entropy of mixing are both positive, and enthalpy prevails at low T. In the latter case, the enthalpy and entropy of mixing are both negative, and entropy drives the demixing with increasing T. Experiments and computer simulations highlight the contiguity of these phase separations with the nanoscale inhomogeneity (nanostructuring), displayed by several ILs and IL solutions. Current applications in extraction, separation, and catalysis are briefly reviewed. Moreover, future applications in forward osmosis desalination, low-enthalpy thermal storage, and water harvesting from the atmosphere are discussed in more detail.

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“…11,12 In addition, the designable structures and properties of ionic liquids enable the selective extraction, separation, and purification of certain natural active ingredients, and they also meet the requirements of green chemistry. 13,14 For alkaloids, allylmethylimidazolium bromide ([Amim][Br]), 15 1-butyl-3-methylimidazolium tetrafluoroborate ([C 4 mim][BF 4 ]), 16 1-(2-hydroxyethyl)-3-methylimidazolium tetrachloridoferrate ([C 2 OHmim][FeCl 4 ]), 17 1-butyl-3-methylimidazolium chloride ([C 4 mim][Cl]), 18 and 1-butyl-3-methylimidazolium acesulfamate ([C 4 C 1 im][Ace]) 19 have been used, but ionic liquids other than substituted imidazoles have been rarely studied; moreover, theophylline has not been separated via liquid–liquid extraction with ILs. To enable easier solid–liquid separation and IL recycling, researchers have developed some physical and chemical approaches for immobilizing these green solvents and using them as selective sorbents.…”

Section: Introductionmentioning

confidence: 99%

A systematic comparison of the extraction and adsorption of theophylline by new amino acid ester-based ionic liquids

et al. 2022

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A LCST-type ionic liquid used as the recyclable extractant for the extraction and separation of liquiritin and glycyrrhizic acid from licorice (Glycyrrhiza uralensis Fisch)

Cited by 9 publications

References 47 publications

Recovery of Astaxanthin from Antarctic Krill (Euphausia superba) Waste by Using Thermo-reversible Ionic Liquid-Water Systems: Phase Behavior, Extraction and Residue Utilization

Recovery of Astaxanthin from Antarctic Krill (Euphausia superba) Waste by Using Thermo-reversible Ionic Liquid-Water Systems: Phase Behavior, Extraction and Residue Utilization

Thermoresponsive Ionic Liquid/Water Mixtures: From Nanostructuring to Phase Separation

A systematic comparison of the extraction and adsorption of theophylline by new amino acid ester-based ionic liquids

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