scholarly journals Salt effect on the (polyethylene glycol 8000+sodium sulfate) aqueous two-phase system: Relative hydrophobicity of the equilibrium phases

2011 ◽  
Vol 43 (8) ◽  
pp. 1299-1304 ◽  
Author(s):  
Luisa A. Ferreira ◽  
José A. Teixeira
Keyword(s):  
Polyethylene Glycol ◽  
Sodium Sulfate ◽  
Salt Effect ◽  
Phase System ◽  
Two Phase ◽  
Aqueous Two Phase System ◽  
Equilibrium Phases

Polyethylene glycol-modified avidin: A novel agent for the selective extraction of biotinylated immune-complex in an aqueous two-phase system

1996 ◽  
Vol 7 (3) ◽  
pp. 289-296 ◽  
Author(s):  
Hiroyuki Nishimura ◽  
Nobuhiro Munakata ◽  
Konosuke Hayashi ◽  
Masao Hayakawa ◽  
Hideki Iwamoto ◽  
...  
Keyword(s):  
Polyethylene Glycol ◽  
Immune Complex ◽  
Selective Extraction ◽  
Phase System ◽  
Two Phase ◽  
Aqueous Two Phase System ◽  
Novel Agent

Aqueous Two-Phase Extraction of Potassium Glycyrrhizinate with Polyethylene Glycol/(NH4)2SO4

2012 ◽  
Vol 550-553 ◽  
pp. 1687-1690
Author(s):  
Chen Sun ◽  
Wen Ju Liu ◽  
Hai Ming Zhang
Keyword(s):  
Polyethylene Glycol ◽  
Mass Fraction ◽  
Ph Value ◽  
Phase System ◽  
Phase Extraction ◽  
Two Phase ◽  
Aqueous Two Phase System ◽  
Result Show ◽  
A New Technique ◽  
Aqueous Two Phase Extraction

An aqueous two-phase system of polyethylene glycol (PEG)/(NH4)2SO4 with the behavior of forming aqueous two-phase and the distribution rules of potassium glycyrrhizinate in the aqueous two-phase system were studied. Effects of the molecular weight of PEG, the mass fraction of PEG and (NH4)2SO4, and pH value were investigated. The result show that when the mass fraction of PEG1000 was 50%, the mass fraction of (NH4)2SO4 was 5.7%, and pH value was 6.5, the highest extraction recovery of potassium glycyrrhizinate could reach 99.7%. This aqueous two-phase extraction may provide a new technique for separation of potassium glycyrrhizinate.

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