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Partitioning of l-lysine monohydrochloride in aqueous two-phase systems of poly(ethylene glycol) and dipotassium hydrogen phosphate or trisodium citrate 5-hydrate

Mirsiaghi, M ; Sharif University of Technology | 2010

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  1. Type of Document: Article
  2. DOI: 10.1021/je901044m
  3. Publisher: 2010
  4. Abstract:
  5. The partition constants of l-lysine HCl were measured in polymer-salt aqueous two-phase systems. These systems contain poly(ethylene glycol) with a nominal molecular weight of 4000 or 10000 and two different salts (dipotassium hydrogen phosphate or trisodium citrate 5-hydrate). The experimental data were obtained at temperatures of (293.15, 298.15, and 303.15) K. The effects of temperature, pH, polymer and salt concentrations, polymer molecular weight, and salt type on the partitioning of l-lysine HCl were also studied. The results showed that salt concentration has a significant effect on the partition constant while temperature has less effect. The Diamond and Hsu model was used to correlate the experimental partition constants of l-lysine HCl
  6. Keywords:
  7. Aqueous two phase system ; Effects of temperature ; Experimental data ; Hydrogen phosphates ; l-Lysine ; Partition constant ; Polymer molecular weight ; Polymer salts ; Salt concentration ; Trisodium citrates ; Amino acids ; Ethylene ; Ethylene glycol ; Hydrates ; Hydration ; Hydrogen ; Molecular weight ; Polyethylene glycols ; Polyethylene oxides ; Polymers ; Temperature ; pH effects
  8. Source: Journal of Chemical and Engineering Data ; Volume 55, Issue 9 , 2010 , Pages 3005-3009 ; 00219568 (ISSN)
  9. URL: http://pubs.acs.org/doi/abs/10.1021/je901044m