Solubilities of Amino Acids in the Presence of Chaotropic Anions

Article Thermodynamics

Salt effects on the solubility of aromatic and dicarboxylic amino acids in water

Mehriban Aliyeva et al.

Summary: This study investigated the effect of KCl and (NH4)2SO4 salts on the solubility of L-aspartic acid, L-glutamic acid, L-tryptophan, and L-tyrosine. The results showed that both salts had a salting-in effect on glutamic acid and aspartic acid, with (NH4)2SO4 having a stronger effect. For the aromatic amino acids, there was a slight increase in solubility at low salt concentrations, followed by a stronger salting-out effect, particularly with (NH4)2SO4. Furthermore, the relative solubility data were compared and a ranking connected to the amino acids' structure was established.

JOURNAL OF CHEMICAL THERMODYNAMICS (2023)

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Article Engineering, Chemical

Electrolyte Effects on the Amino Acid Solubility in Water: Solubilitiesof Glycine,L-Leucine,L-Phenylalanine, andL-Aspartic Acid in SaltSolutions of (Na+,K+,NH4+)/(Cl-,NO3-)

Mehriban Aliyeva et al.

Summary: The solubilities of amino acids in aqueous salt solutions were measured, and the effect of functional groups on solubility was analyzed.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2022)

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Article Thermodynamics

Solubilities of Amino Acids in Aqueous Solutions of Chloride or Nitrate Salts of Divalent (Mg2+ or Ca2+) Cations

Mehriban Aliyeva et al.

Summary: This study measured the solubilities of glycine, L-leucine, L-phenylalanine, and L-aspartic acid in aqueous solutions containing different concentrations of magnesium and calcium salts. The results showed that all salts increased the solubility of amino acids, with calcium salts having a stronger effect.

JOURNAL OF CHEMICAL AND ENGINEERING DATA (2022)

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Article Pharmacology & Pharmacy

Understanding the Salt-Dependent Outcome of Glycine Polymorphic Nucleation

Guangjun Han et al.

Summary: The study found that (NH4)2SO4, NaCl, and KNO3 promote the formation of gamma-glycine while inhibiting the formation of alpha-glycine, explaining why these three salts induce gamma-glycine readily. This research sheds light on the salt-governed glycine polymorphic selectivity.

PHARMACEUTICS (2021)

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Article Chemistry, Multidisciplinary