Enantioseparation of phenylsuccinic acid enantiomers based on aqueous two-phase system with ethanol/ammonium sulfate: phase diagrams optimization and partitioning experiments

2015 ◽  
Vol 81 (3-4) ◽  
pp. 475-484 ◽  
Author(s):  
Jun Wang ◽  
Xiaoqing Chen ◽  
Feipeng Jiao
Keyword(s):  
Phase Diagrams ◽  
Ammonium Sulfate ◽  
Phase System ◽  
Two Phase ◽  
Aqueous Two Phase System ◽  
Phenylsuccinic Acid

Aqueous two-phase system (polyethylene glycol + ionic liquid) for extraction of α-amylase: phase diagrams, systems characterization and partition study

2020 ◽  
Vol 37 (3) ◽  
pp. 595-606
Author(s):  
O. R. R. Gandolfi ◽  
G. R. F. Gonçalves ◽  
I. C. Batista ◽  
R. C. I. Fontan ◽  
C. M. Veloso ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Polyethylene Glycol ◽  
Phase Diagrams ◽  
Phase System ◽  
Two Phase ◽  
Aqueous Two Phase System

The Extraction of Polyphenols from Tea Leaves Based on Mechanochemical Methodology and Aqueous Two-Phase System

2013 ◽  
Vol 834-836 ◽  
pp. 508-514
Author(s):  
Da Gang Li ◽  
Fu Fang Yuan ◽  
Ru Pan Chen ◽  
Yun Long Li ◽  
Kun Lu Li ◽  
...  
Keyword(s):  
Ammonium Sulfate ◽  
Room Temperature ◽  
Maximum Yield ◽  
Green Technology ◽  
Extraction System ◽  
Phase System ◽  
Two Phase ◽  
Material Particle ◽  
Aqueous Two Phase System ◽  
Optimum Parameters

In order to extract tea polyphenols (TPs) by water under room temperature, the mechanochemical methodology was used for leaching process, and then TPs was purified from leaching solution by ethanol and ammonium sulfate aqueous two-phase system. The optimum parameters of mechanochemical methodology leaching TPs were determined by response surface methodology (RSM), which optimum parameters were: Na2CO3content 25~27wt%, solid material particle size D9540~45μm, liquid/solid mass ratio55~60, leaching time 16~18min. The TPs leaching rate was 16.46%. When ammonium sulfate mass composition0.2, ethanol mass composition0.35 as the composite of the extraction system, TPs maximum extraction rate was 93.4%. The maximum yield of TPs was 15.25% on the average, with average purity was 96.54% ultimately. Under such technology, water is only solvent used in TPs leaching at room temperature, and aqueous two-phase system extraction system under mild conditions, avoid the use of toxic solvent, is a green technology for extracting TPs.

Protic ionic liquids as constituent of aqueous two-phase system based on acetonitrile: Synthesis, phase diagrams and genipin pre-purification

2020 ◽  
Vol 507 ◽  
pp. 112425 ◽  
Author(s):  
Lídia Cristina Alves Camêlo ◽  
Gabriela de Souza Dias Santos ◽  
Ranyere Lucena de Souza ◽  
Cleide Mara Faria Soares ◽  
Jorge Fernando Brandão Pereira ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Phase Diagrams ◽  
Phase System ◽  
Protic Ionic Liquids ◽  
Two Phase ◽  
Aqueous Two Phase System
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