Are deep eutectic solvents really green?: A life-cycle perspective
Deep eutectic solvents (DESs) have generated great interest as promising green alternatives to replace conventional solvents due to their application-specific tunability, nonflamability, variable viscosity, low vapor pressure, and chemical (and thermal) stability.
Natural deep eutectic solvents as green plasticizers for chitosan
Natural deep eutectic solvents as green plasticizers for chitosan thermoplastic production with controlled/desired mechanical and barrier properties Andrea C. Galvis-Sánchez , Maria Cidália R. Castro , Krzysztof Biernacki , Maria P. Gonalves , Hiléia K.S. Souza Add to Mendeley https://doi.org/10.1016/j.foodhyd.2018.04.026 Get rights and content
Basics and properties of deep eutectic solvents: a review
Density is one of the fundamental physical properties of liquids. Most of the reported deep eutectic solvents present higher densities than water with values ranging between 1.0 and 1.3 g.cm 3 at 25 °C, while deep eutectic solvents based on metal salts have densities in the 1.3–1.6 g.cm 3 range (Tang and Row, 2013 ).
Deep eutectic solvents and their applications as green solvents
Main-group metal–mediated organic synthesis can be run under air and at room temperature in Deep Eutectic Solvents (DESs). Metal-catalysed reactions in DESs take place under milder conditions than in traditional volatile organic compounds. The use of eutectic mixtures often allows an efficient recycling of both the catalyst and the solvent.
Sustainable chitosan films containing a betaine-based deep eutectic
A green method of dissolving lignin using an eco-friendly betaine:lactic acid deep eutectic solvent (DES) to improve the compatibility of lignin in a chitosan matrix for the preparation of films was investigated. Specific attention was paid to the relationship between the DES (10–30 wt%) and lignin (1 wt%) contents of the film-forming solutions.
- Do natural deep eutectic solvents play a role as alternative media to water?
- This finding made us hypothesize that natural deep eutectic solvents (NADES) play a role as alternative media to water in living organisms and tested a wide range of natural products, which resulted in discovery of over 100 NADES from nature.
- Are deep eutectic solvents a cheaper alternative to ionic liquids?
- Deep eutectic solvents (DES), a new class of solvents composed of hydrogen bond donors and acceptors, have been proposed as a cheaper alternative to ionic liquids. Hydrophobic DES derived from natural compounds (NADES) show promise as extractants in liquid–liquid extractions.
- Are natural deep eutectic solvents a promising green extraction technology?
- This review discusses the significance of natural deep eutectic solvents (NaDESs) as a promising green extraction technology. It employs the consolidated meta-analytic approach theory methodology, using the Web of Science and Scopus databases to analyze 2091 articles as the basis of the review.
- What are natural deep eutectic solvents (NADES)?
- One such innovative alternative is natural deep eutectic solvents (NaDESs), which have become a new green tool for improving drugs’ bioavailability and absorption, pharmaceuticals, nutraceuticals, and cosmetics.
- Are natural products a source for deep eutectic solvents and ionic liquids?
- Natural products were used as a source for deep eutectic solvents and ionic liquids. ► We define own chemical and physical properties of natural deep eutectic solvents. ► Interaction between natural deep eutectic solvents and solutes was confirmed by NMR. ► The developed natural deep eutectic solvents were applied as green media.
- How to prepare natural deep eutectic solvents?
- Two methods were used for preparing natural deep eutectic solvents (NADES): a vacuum evaporating and a heating method. Evaporating method: components were dissolved in water and evaporated at 50 °C with a rotatory evaporator. The liquid obtained was put in a desiccator with silica gel till they reached a constant weight.
