Partitioning of amino acids in the novel biphasic systems based on environmentally friendly ethyl lactate

Ishara Kamalanathan, Luca Canal, Joe Hegarty, Vesna Najdanovic-Visak

Research output: Contribution to journalArticle

Abstract

For the first time, we report on the performance of biphasic system composed of ethyl lactate, water and inorganic salt (K3PO4, K2HPO4 and K2CO3) for the separation of amino acids (L-phenylalanine, L-tryptophan and L-tyrosine) from their aqueous solutions. Cloud points (solubility curve) and tie-lines for three ternary (ethyl la ctate + water + inorganic salt) systems at 298.2 K and 313.2 K at atmospheric pressure were determined. For certain composition range, these mixture exhibit biphasic systems – top and bottom phases rich in ethyl lactate and salt, respectively. Partition coefficients of amino acids and their extraction efficiencies, as essential parameters for design of any separation process, were measured at two temperatures – 298.2 K and 313.2 K. The maximum values of partition coefficients were observed for the system containing K3PO4: 3.5, 3.7 and 11.9 for L-phenylalanine at 313.2 K, L-tyrosine at 298.2 K and L-tryptophan at 313.2 K, respectively. The obtained results clearly showed that the biphasic systems based on ethyl lactate are suitable for the efficient and sustainable recovery of amino acids from solutions with water.
Original languageEnglish
Pages (from-to)6-13
JournalFluid Phase Equilibria
Volume462
Early online date31 Jan 2018
DOIs
Publication statusPublished - 25 Apr 2018

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lactates
amino acids
Amino acids
phenylalanine
Salts
tyrosine
tryptophan
salts
Phenylalanine
Amino Acids
Tryptophan
Tyrosine
Water
partitions
water
coefficients
Atmospheric pressure
atmospheric pressure
solubility
Solubility

Bibliographical note

© 2018, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

Cite this

Kamalanathan, Ishara ; Canal, Luca ; Hegarty, Joe ; Najdanovic-Visak, Vesna. / Partitioning of amino acids in the novel biphasic systems based on environmentally friendly ethyl lactate. In: Fluid Phase Equilibria. 2018 ; Vol. 462. pp. 6-13.
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abstract = "For the first time, we report on the performance of biphasic system composed of ethyl lactate, water and inorganic salt (K3PO4, K2HPO4 and K2CO3) for the separation of amino acids (L-phenylalanine, L-tryptophan and L-tyrosine) from their aqueous solutions. Cloud points (solubility curve) and tie-lines for three ternary (ethyl la ctate + water + inorganic salt) systems at 298.2 K and 313.2 K at atmospheric pressure were determined. For certain composition range, these mixture exhibit biphasic systems – top and bottom phases rich in ethyl lactate and salt, respectively. Partition coefficients of amino acids and their extraction efficiencies, as essential parameters for design of any separation process, were measured at two temperatures – 298.2 K and 313.2 K. The maximum values of partition coefficients were observed for the system containing K3PO4: 3.5, 3.7 and 11.9 for L-phenylalanine at 313.2 K, L-tyrosine at 298.2 K and L-tryptophan at 313.2 K, respectively. The obtained results clearly showed that the biphasic systems based on ethyl lactate are suitable for the efficient and sustainable recovery of amino acids from solutions with water.",
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Partitioning of amino acids in the novel biphasic systems based on environmentally friendly ethyl lactate. / Kamalanathan, Ishara; Canal, Luca; Hegarty, Joe; Najdanovic-Visak, Vesna.

In: Fluid Phase Equilibria, Vol. 462, 25.04.2018, p. 6-13.

Research output: Contribution to journalArticle

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