Solubility and Solution Thermodynamics of the δ Form of <scp>l</scp>-Citrulline in Water + Ethanol Binary Solvent Mixtures

Li, Suye; Jiang, Linjie; Qiu, Jingxuan; Wang, Peng

doi:10.1021/acs.jced.5b00585

Cited by 10 publications

(10 citation statements)

References 11 publications

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“…In wines where Cit was quantifiable, its concentration decreased with the fortification, between 11 and 46%. This decrease can also be related to the dilution that naturally occurs on the fortification step and by the reduced solubility of Cit with increased ethanol content (S. Li et al, 2016).…”

Section: Impact Of Fortification On the Passage Of Ec Precursors From Intercellular Yeast To The Wine Mediummentioning

confidence: 99%

New insights into ethyl carbamate occurrence in fortified wines

Leça

Pereira

Miranda

et al. 2021

LWT

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The occurrence of ethyl carbamate (EC) in fortified wines was studied testing different model wines under accelerated ageing (45 • C for 4 months and 70 • C for 1 month), to investigate the possibility of arginine (Arg) being a direct precursor of EC in fortified wines, comparing it with known major precursors, urea and citrulline (Cit). Wine main sugars were appraised as possible catalysts, as previously pointed out. Model wines showed that: Arg can induce the EC formation under accelerated ageing, even without being metabolised by microorganisms; although much less reactive, Arg can play a significant role since high residual levels can occur in young fortified wines; glucose (Glc) and fructose (Fru) suppressed the EC formation from urea and Cit pathways, in about 11-26%.Moreover, Madeira wine samples were investigated in order to appraise the eventual contribution of the alcoholic fortification. The results revealed that this step can promote a decrease of the amount of these EC precursors up to 46%.Despite preliminary, additional information about the EC formation in fortified wines was obrained namely for designing new mitigation strategies, which can pass through the reduction of residual Arg.

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Section: Impact Of Fortification On the Passage Of Ec Precursors From Intercellular Yeast To The Wine Mediummentioning

confidence: 99%

New insights into ethyl carbamate occurrence in fortified wines

Leça

Pereira

Miranda

et al. 2021

LWT

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“…To exploit the valuable NaCl from organic solvents, the thermodynamic functions for the dissolution process of NaCl in the mixed solvent (CH 3 OH + H 2 O) are also essential. Hence, we calculated the relevant thermodynamic functions [16] during the dissolution process of NaCl in the mixed solvent, such as Gibbs free energy (∆ sol G), entropy (∆ sol S), and enthalpy (∆ sol H), and the following correlation equations were used [17]:…”

Section: Calculated Ermodynamic Functionsmentioning

confidence: 99%

Solid-Liquid Phase Equilibria of the Ternary System (NaCl + CH₃OH + H₂O) at 298.15, 308.15, 318.15 K, and 0.1 MPa

Shi

et al. 2018

Journal of Chemistry

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The phase equilibrium of the ternary system (NaCl + CH3OH + H2O) at 298.15, 308.15, 318.15 K, and 0.1 MPa has been investigated by the isothermal dissolution equilibrium method. Solubilities and physicochemical properties including refractive index (nD) and density (ρ) in the ternary system were determined experimentally. According to the experimental data, the phase diagrams and diagrams of physicochemical properties versus sodium chloride concentration in the solvents at 298.15, 308.15, and 318.15 K were plotted, respectively. The experimental results showed that the system did not cause stratification and the equilibrium solid phase was anhydrous sodium chloride. Neither double salt nor solid solution was found at the three temperatures. The physicochemical properties of the ternary system change regularly with the increase of sodium chloride concentration in the solution, and the solvation effect of CH3OH on NaCl was significant. Moreover, the calculated values of NaCl solubility data based on the CNIBS/R-K equations agreed well with the experimental results, and the thermodynamic functions in the dissolution process of NaCl in the CH3OH-H2O binary system were also calculated for further investigation of NaCl dissolution process.

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“…The solubility of PRS in pure i-PrOH and i-PrOH/DMF was measured by dynamic laser method (Li et al, 2012(Li et al, , 2016Zhi et al, 2016;Qiaoli Chen, 2009;Wang et al, 2013) at atmospheric pressure ranging from 293.15 to 333.15K. The apparatus contained a laser monitor and a 50 mL jacketed glass vessel.…”

Section: Methodsmentioning

confidence: 99%

“…Where A 1 , B 1 , A 2 , B 2 , J 0 , J 1 , J 2 represent the model parameters regressed by the experimental data, other characters are the same meaning as Equation 3 (Li et al, 2016;Wang et al, 2014).…”

Section: D Jouyban-acree Modelmentioning

confidence: 99%

Untitled

2018

J. Eng. Manuf. Technol.

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The solubility of Pranlukast in isopropanol and isopropanol-N,Ndimethylformamide binary solvents from 293.15 to 333.15 K at atmospheric pressure was determined by dynamic laser method. The results obtained show that the solubility of Pranlukast increased with increasing temperature in a certain solvent system, and also increased with increasing mole fraction of N,Ndimethylformamide in the binary solvent systems at a specific temperature. Experimental data were correlated using the modified Apelblat model, the CNIBS/Redlich-Kister model and the 3D Jouyban-Acree model. The results obtained suggest that all the models provided good fit, with the most accurate prediction obtained from the modified Apelblat model. Thermodynamic properties including standard enthalpy, standard entropy and molar Gibbs free energy change of solution were calculated as well, which indicated that the dissolution process was endothermic and non-spontaneous.

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Solubility and Solution Thermodynamics of the δ Form of l-Citrulline in Water + Ethanol Binary Solvent Mixtures

Cited by 10 publications

References 11 publications

New insights into ethyl carbamate occurrence in fortified wines

New insights into ethyl carbamate occurrence in fortified wines

Solid-Liquid Phase Equilibria of the Ternary System (NaCl + CH₃OH + H₂O) at 298.15, 308.15, 318.15 K, and 0.1 MPa

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Solubility and Solution Thermodynamics of the δ Form of l-Citrulline in Water + Ethanol Binary Solvent Mixtures

Cited by 10 publications

References 11 publications

New insights into ethyl carbamate occurrence in fortified wines

New insights into ethyl carbamate occurrence in fortified wines

Solid-Liquid Phase Equilibria of the Ternary System (NaCl + CH3OH + H2O) at 298.15, 308.15, 318.15 K, and 0.1 MPa

Untitled

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Solid-Liquid Phase Equilibria of the Ternary System (NaCl + CH₃OH + H₂O) at 298.15, 308.15, 318.15 K, and 0.1 MPa