Enantioselective extraction of mandelic acid enantiomers by aqueous two-phase systems of polyethylene glycol and ammonium sulfate containing β-cyclodextrin as chiral selector

2011 ◽  
Vol 8 (4) ◽  
pp. 889-896 ◽  
Author(s):  
L. Tan ◽  
Y. Long ◽  
F. Jiao ◽  
X. Chen
Keyword(s):  
Polyethylene Glycol ◽  
Ammonium Sulfate ◽  
Mandelic Acid ◽  
Chiral Selector ◽  
Two Phase ◽  
Mandelic Acid Enantiomers ◽  
Aqueous Two Phase Systems ◽  
Enantioselective Extraction ◽  
Phase Systems

scholarly journals Enantioselective Extraction of Phenylalanine Enantiomers Using Environmentally Friendly Aqueous Two-Phase Systems

Processes ◽  
2018 ◽  
Vol 6 (11) ◽  
pp. 212 ◽  
Author(s):  
Danyu Sun ◽  
Runping Wang ◽  
Fenfang Li ◽  
Lianglei Liu ◽  
Zhijian Tan
Keyword(s):  
Ionic Liquids ◽  
Environmentally Friendly ◽  
Deep Eutectic Solvents ◽  
Chiral Selector ◽  
Extraction Temperature ◽  
Two Phase ◽  
Aqueous Two Phase Systems ◽  
Enantioselective Extraction ◽  
Chiral Extraction ◽  
Phase Systems

(1) Background: The environmentally friendly choline-amino acid ionic liquids (ChAAILs) and deep eutectic solvents (DESs) have been used as excellent alternatives to volatile organic compounds (VOCs) and ionic liquids (ILs) in recent years; (2) Methods: Thus, ChAAILs/salt and DESs/salt aqueous two-phase systems (ATPSs) were developed for the chiral extraction of phenylalanine enantiomers. The optimum ATPS of [Ch][L-Pro]/K3PO4 was chosen, and the influencing parameters were investigated, including ChAAILs concentration, salt concentration, chiral selector concentration, extraction temperature, phenylalanine concentration, and system pH; (3) Results: The phenylalanine enantiomers were mainly extracted into the top phase (ChAAIL-rich phase), meanwhile, the (S)-phenylalanine [(S)-Phe)] was preferentially recognized by the chiral selector in the top phase. The maximum separation factor (α) of 2.05 was obtained under the optimal conditions; and (4) Conclusions: This ATPS that was used for the chiral extraction of enantiomers is much more environmentally friendly, simple, and rapid, and has the potential to be used in the enantioselective extraction of other enantiomers.

Phase diagrams of aqueous two-phase systems formed by polyethylene glycol+ammonium sulfate+water: equilibrium data and thermodynamic modeling

2015 ◽  
Vol 406 ◽  
pp. 61-69 ◽  
Author(s):  
Gabriella Frade Murari ◽  
Jussara Alves Penido ◽  
Poliana Aparecida Lopes Machado ◽  
Leandro Rodrigues de Lemos ◽  
Nelson Henrique Teixeira Lemes ◽  
...  
Keyword(s):  
Polyethylene Glycol ◽  
Phase Diagrams ◽  
Ammonium Sulfate ◽  
Thermodynamic Modeling ◽  
Two Phase ◽  
Equilibrium Data ◽  
Aqueous Two Phase Systems ◽  
Phase Systems ◽  
Water Equilibrium

Porcine pancreatic lipase partition in potassium phosphate–polyethylene glycol aqueous two-phase systems

2007 ◽  
Vol 859 (2) ◽  
pp. 222-228 ◽  
Author(s):  
Georgina Bassani ◽  
Beatriz Farruggia ◽  
Bibiana Nerli ◽  
Diana Romanini ◽  
Guillermo Picó
Keyword(s):  
Polyethylene Glycol ◽  
Pancreatic Lipase ◽  
Potassium Phosphate ◽  
Porcine Pancreatic Lipase ◽  
Two Phase ◽  
Aqueous Two Phase Systems ◽  
Phase Systems
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