Novel zwitterionic Natural Deep Eutectic Solvents as environmentally friendly media for spontaneous self-assembly of gold nanoparticles

2018 ◽  
Vol 268 ◽  
pp. 371-375 ◽  
Author(s):  
Antonello Di Crescenzo ◽  
Matteo Tiecco ◽  
Romina Zappacosta ◽  
Simona Boncompagni ◽  
Pietro Di Profio ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Self Assembly ◽  
Environmentally Friendly ◽  
Deep Eutectic Solvents ◽  
Natural Deep Eutectic Solvents

scholarly journals Biomass Valorization Using Natural Deep Eutectic Solvents: What’s New in France?

Molecules ◽  
2021 ◽  
Vol 26 (21) ◽  
pp. 6556
Author(s):  
Laura Wils ◽  
Soukaina Hilali ◽  
Leslie Boudesocque-Delaye
Keyword(s):  
Natural Products ◽  
Low Cost ◽  
Environmentally Friendly ◽  
Deep Eutectic Solvents ◽  
Sustainable Chemistry ◽  
Promising Alternative ◽  
Biomass Valorization ◽  
Natural Deep Eutectic Solvents ◽  
The World

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.

scholarly journals Application of natural deep eutectic solvents to extract ferulic acid from Ligusticum chuanxiong Hort with microwave assistance

RSC Advances ◽  
2019 ◽  
Vol 9 (39) ◽  
pp. 22677-22684 ◽  
Author(s):  
Yilin Xie ◽  
Herui Liu ◽  
Li Lin ◽  
Maojun Zhao ◽  
Li Zhang ◽  
...  
Keyword(s):  
Ferulic Acid ◽  
Environmentally Friendly ◽  
Deep Eutectic Solvents ◽  
Ligusticum Chuanxiong ◽  
Natural Deep Eutectic Solvents ◽  
Microwave Assistance ◽  
Environmentally Friendly Method

In this study, natural deep eutectic solvents (NADES) combined with microwave-assistance extraction (MAE) were researched to establish an environmentally-friendly method for extracting ferulic acid from Ligusticum chuanxiong Hort.

scholarly journals Gold nanoparticles covalently assembled onto vesicle structures as possible biosensing platform

2016 ◽  
Vol 7 ◽  
pp. 655-663 ◽  
Author(s):  
M Fátima Barroso ◽  
M Alejandra Luna ◽  
Juan S Flores Tabares ◽  
Cristina Delerue-Matos ◽  
N Mariano Correa ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Self Assembly ◽  
Environmentally Friendly ◽  
Spherical Shape ◽  
The Self ◽  
Large Unilamellar Vesicle ◽  
Future Design ◽  
Pure Glycerol ◽  
The Future ◽  
Microscopy Techniques

In this contribution a strategy is shown to covalently immobilize gold nanoparticles (AuNPs) onto vesicle bilayers with the aim of using this nanomaterial as platform for the future design of immunosensors. A novel methodology for the self-assembly of AuNPs onto large unilamellar vesicle structures is described. The vesicles were formed with 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC) and 1-undecanethiol (SH). After, the AuNPs photochemically synthesized in pure glycerol were mixed and anchored onto SH–DOPC vesicles. The data provided by voltammetry, spectrometry and microscopy techniques indicated that the AuNPs were successfully covalently anchored onto the vesicle bilayer and decorated vesicles exhibit a spherical shape with a size of 190 ± 10 nm. The developed procedure is easy, rapid and reproducible to start designing a possible immunosensor by using environmentally friendly procedures.

Development of environmentally friendly lipase-catalysed kinetic resolution of (R,S)-1-phenylethyl acetate using aqueous natural deep eutectic solvents

2021 ◽  
Vol 102 ◽  
pp. 1-9
Author(s):  
Manuela Panić ◽  
Mia Radović ◽  
Izabela Maros ◽  
Ana Jurinjak Tušek ◽  
Marina Cvjetko Bubalo ◽  
...  
Keyword(s):  
Kinetic Resolution ◽  
Environmentally Friendly ◽  
Deep Eutectic Solvents ◽  
Natural Deep Eutectic Solvents

Deep Eutectic Solvents for the Self-Assembly of Gold Nanoparticles: A SAXS, UV–Vis, and TEM Investigation

Langmuir ◽  
2014 ◽  
Vol 30 (21) ◽  
pp. 6038-6046 ◽  
Author(s):  
Vikram Singh Raghuwanshi ◽  
Miguel Ochmann ◽  
Armin Hoell ◽  
Frank Polzer ◽  
Klaus Rademann
Keyword(s):  
Gold Nanoparticles ◽  
Self Assembly ◽  
Deep Eutectic Solvents ◽  
The Self

Gold Nanoparticles in Novel Green Deep Eutectic Solvents: Self-Limited Growth, Self-Assembly & Catalytic Implications

2015 ◽  
Vol 229 (1-2) ◽  
Author(s):  
Maeve O'Neill ◽  
Vikram Singh Raghuwanshi ◽  
Robert Wendt ◽  
Markus Wollgarten ◽  
Armin Hoell ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Activity ◽  
Self Assembly ◽  
Choline Chloride ◽  
Deep Eutectic Solvent ◽  
Deep Eutectic Solvents ◽  
Reaction Rate Constant ◽  
Limited Growth ◽  
X Ray Scattering ◽  
Transmission Electron

AbstractIn this article, we are reporting the catalytic activity of gold nanoparticles (AuNPs) dispersed in a novel eco-friendly Deep Eutectic Solvent (DES; choline chloride and urea) at room temperature. A low energy sputter deposition method is employed to synthesize AuNPs on the DES surface. This is a simple, economical and clean method for producing monodisperse gold nanoparticles by a self-limited growth mechanism. Detailed Small Angle X-ray Scattering (SAXS), UV–Vis and Transmission Electron Microscopy (TEM) investigations show the formation of spherical AuNPs of 5 nm in diameter. Moreover, these particles have a strong tendency to self-assemble at the DES surface as well as into the bulk. This is a new addition to a novel generation of gold based catalysts. The catalytic activity of Au nanoparticles in DES is revealed quantitatively by analyzing the apparent conversion reaction rate constant

scholarly journals Environmentally Friendly Techniques and Their Comparison in the Extraction of Natural Antioxidants from Green Tea, Rosemary, Clove, and Oregano

Molecules ◽  
2021 ◽  
Vol 26 (7) ◽  
pp. 1869
Author(s):  
Mariel Calderón-Oliver ◽  
Edith Ponce-Alquicira
Keyword(s):  
Green Tea ◽  
Electric Fields ◽  
Antioxidant Activities ◽  
Environmentally Friendly ◽  
Natural Antioxidants ◽  
Deep Eutectic Solvents ◽  
Extraction Methods ◽  
Extraction Techniques ◽  
Health Trends ◽  
Food Applications

Many current food and health trends demand the use of more ecological, sustainable, and environmentally friendly techniques for the extraction of bioactive compounds, including antioxidants. However, extraction yields and final antioxidant activities vary between sources and are highly influenced by the given extraction method and nature and ratio of the employed solvent, especially for total polyphenols, flavonoids, and anthocyanins, which are well recognized as natural antioxidants with food applications. This review focused on the most common extraction techniques and potential antioxidant activity in the food industry for various natural antioxidant sources, such as green tea, rosemary, clove, and oregano. Green extraction techniques have been proven to be far more efficient, environmentally friendly, and economical. In general, these techniques include the use of microwaves, ultrasound, high hydrostatic pressure, pulsed electric fields, enzymes, and deep eutectic solvents, among others. These extraction methods are described here, including their advantages, disadvantages, and applications.

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