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Influence of the Composition of (H2O + SDS) Mixtures on the Interaction Energy of dl-α-Alanyl-dl-α-Valine and dl-α-Alanyl-dl-α-Norleucine with SDS Micelles at T = 298.15 K
Journal of Solution Chemistry ( IF 1.2 ) Pub Date : 2019-08-22 , DOI: 10.1007/s10953-019-00910-1
V. I. Smirnov , V. G. Badelin , V. P. Barannikov , M. S. Kurbatova

The dissolution enthalpies (ΔsolHm\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\Delta_{\text{sol}} H_{\text{m}}$$\end{document}) of dl-α-alanyl-dl-α-valine (AlaVal) and dl-α-alanyl-dl-α-norleucine (AlaNln) in aqueous solutions of dodecyl sulfate (SDS) at SDS concentration of mSDS = 0.05 mol·kg−1 and peptide concentration m = 0.010 to 0.025 mol·kg−1 at T = 298.15 K were measured via calorimetry. The results obtained have been used to calculate the transfer enthalpies (ΔtrHm\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\Delta_{\text{tr}} H_{\text{m}}$$\end{document}) of AlaVal and AlaNln from water into (water + SDS) micellar solution. Thermochemical characteristics of the transfer of AlaVal, and AlaNln in the investigated range of peptide concentrations are compared. The results are interpreted by considering ion–ion, ion–polar, and hydrophobic–hydrophobic interactions between the dipeptides and SDS micelles.

中文翻译:

(H2O + SDS) 混合物的组成对 dl-α-丙氨酰-dl-α-缬氨酸和 dl-α-丙氨酰-dl-α-正亮氨酸与 SDS 胶束在 T = 298.15 K 的相互作用能的影响

获得的结果已用于计算传递焓 (ΔtrHm\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs } \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\Delta_{\text{tr}} H_{\text{m}}$$\end{document}) 的 AlaVal和 AlaNln 从水中变成(水 + SDS)胶束溶液。比较了研究的肽浓度范围内 AlaVal 和 AlaNln 转移的热化学特性。通过考虑二肽和 SDS 胶束之间的离子-离子、离子-极性和疏水-疏水相互作用来解释结果。比较了研究的肽浓度范围内 AlaVal 和 AlaNln 转移的热化学特性。通过考虑二肽和 SDS 胶束之间的离子-离子、离子-极性和疏水-疏水相互作用来解释结果。比较了研究的肽浓度范围内 AlaVal 和 AlaNln 转移的热化学特性。通过考虑二肽和 SDS 胶束之间的离子-离子、离子-极性和疏水-疏水相互作用来解释结果。
更新日期:2019-08-22
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