Influence of pH and acid solutes on the phase behaviour of aqueous solutions containing poly(ethylene glycol) and poly(ethyleneimine)

Biochemical Engineering Journal

Volumn 48, Issue 1, 2009, Pages 104-110

  Yankov, Dragomir S ^a   Trusler, J P Martin ^b   Stateva, Roumiana P ^a   Cholakov, Georgi St ^c  

^a INSTITUTE OF CHEMICAL ENGINEERING   (Bulgaria)

^b IMPERIAL COLLEGE LONDON   (United Kingdom)

^c UNIVERSITY OF CHEMICAL TECHNOLOGY AND METALLURGY   (Bulgaria)

Author keywords

ATPS; Lactic acid; Partition coefficient

Indexed keywords

AQUEOUS SOLUTIONS; AQUEOUS TWO PHASE SYSTEM; BIOTECHNOLOGY INDUSTRY; INFLUENCE OF PH; PARTITION COEFFICIENT; PHASE BEHAVIOUR; POLYETHYLENEIMINE; RICH PHASE; TWO-PHASE REGION;

BODY FLUIDS; ETHYLENE; ETHYLENE GLYCOL; LACTIC ACID; ORGANIC ACIDS; POLYETHYLENE OXIDES;

POLYETHYLENE GLYCOLS;

AZIRIDINE; LACTIC ACID; MACROGOL; POLY(ETHYLENEIMINE); UNCLASSIFIED DRUG;

ARTICLE; GEL PERMEATION CHROMATOGRAPHY; PARTITION COEFFICIENT; PH MEASUREMENT; PRIORITY JOURNAL; TITRIMETRY;

EID: 71849120364     PISSN: 1369703X     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.bej.2009.08.012     Document Type: Article

References (12)

1. Moonchai S., Madlhoo W., Jariyachavalit K., Shimizu H., Shioya S., and Chauvatcharin S. Application of a mathematical model and Differential Evolution algorithm approach to optimization of bacteriocin production by Lactococcus lactis C7. Bioprocess Biosyst. Eng. 28 (2005) 15-26
2. Katzbauer B., Cesi V., Narodoslawsky M., and Moser A. Extractive lactic acid fermentation using aqueous two-phase systems. Chem. Biochem. Eng. Q. 9 (1995) 79-87
3. Dissing U., and Mattiasson B. Cultivation of Lactococcus lactis in a polyelectrolyte-neutral polymer aqueous two-phase system. Biotechnol. Lett. 16 (1994) 333-338
4. Kwon Y.J., Kaul R., and Mattiasson B. Extractive lactic acid fermentation in poly(ethyleneimine)-based aqueous two-phase system. Biotechnol. Bioeng. 50 (1996) 280-290
5. Planas J., Varelas V., Tjerneld F., and Hahn-Hagerdal B. Amine-based aqueous polymers for the simultaneous titration and extraction of lactic acid in aqueous two-phase systems. J. Chromatogr. B 711 (1998) 265-275
6. Planas J., Kozlowski A., Harris J.M., Tjerneld F., and Hahn-Hagerdal B. Novel polymer-polymer conjugates for recovery of lactic acid by aqueous two-phase extraction. Biotechnol. Bioeng. 66 (1999) 211-218
7. Yankov D.S., Stateva R.P., Trusler J.P.M., and Cholakov G.St. Liquid-liquid equilibria in aqueous two-phase systems of poly(ethylene glycol) and poly(ethyleneimine). Experimental measurements and correlation. J. Chem. Eng. Data 51 (2006) 1056-1061
8. Yankov D.S., Trusler J.P.M., Yordanov B.Y., and Stateva R.P. Influence of lactic acid on the formation of aqueous two-phase systems containing poly(ethylene glycol) and phosphates. J. Chem. Eng. Data 53 (2008) 1309-1315
9. Dissing U., and Mattiasson B. Poly(ethyleneimine) as a phase-forming polymer in aqueous two-phase systems. Biotechnol. Appl. Biochem. 17 (1993) 15-21
10. Merchuk J.C., Andrews B.A., and Asenjo J.A. Aqueous two-phase systems for protein separation studies on phase inversion. J. Chromatogr. B 711 (1998) 285-293
11. von Zelewsky A., Barbosa L., and Schläipfer C.W. Poly(ethylenimines) as Brønsted bases and as ligands for metal ions. Coord. Chem. Rev. 123 (1993) 229-246
12. Lindquist G.M., and Stratton R.A. The role of polyelectrolyte charge density and molecular weight on the absorption and flocculation of colloidal silica with polyethyleneimine. J. Colloid Interface Sci. 55 (1974) 45-59