Abstract
With the growing interest in more environmentally friendly solvents and processes, the introduction of Natural Deep Eutectic Solvents (NaDES) as low cost, non-toxic and biodegradable solvents represent a new opportunity for green and sustainable chemistry. Thanks to their remarkable advantages, NaDES are now arousing growing interest in many fields of research such as food, health, cosmetics and biofuels. Around the world, NaDES are seen as a promising alternative to commonly used petrochemical solvents. The objective of this review is to draw up a panorama of the existing skills on NaDES in French laboratories and industries for the valuation of natural products. This review therefore focuses on current applications, skills and perspectives, in order to analyze the place of French research in the use of NaDES for the valorization of biomass since 2015.
Highlights
The actual transition to green and sustainable production processes led to intensive research of alternatives to solvent from petrochemicals or water [1]
They were defined as a mixture of hydrogen bond acceptor (HBA) and hydrogen bond donor (HBD) that could be found in natural resources such as sugars, amino-acids, fatty acids or organic acids [10,11,12]
Natural Deep Eutectic Solvents (NaDES) reported in the literature were mainly hydrophilic with Choline Chloride or Betaine as the most recurring HBA combined with various HBD
Summary
The actual transition to green and sustainable production processes led to intensive research of alternatives to solvent from petrochemicals or water [1] In this context, Natural Deep Eutectic Solvents (NaDES) have been focusing the interest of researchers since the end of the 2010s. NaDES were first introduced by Choi et al in 2013 [10] They were defined as a mixture of hydrogen bond acceptor (HBA) and hydrogen bond donor (HBD) that could be found in natural resources such as sugars, amino-acids, fatty acids or organic acids [10,11,12]. NaDES are green solvents which are cost effective and prepared, and that are outcompeting existing organic solvents [13] In addition they are renewable, biodegradable [12] and tunable [14]. Hydrophobic NaDES have emerged in the literature [15,16,17], that were composed of a combination of terpene (menthol, thymol) with sugars, polyols, or fatty acids or a combination of short-chain fatty acids [15,16,17]
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