✦ LIBER ✦

Solubilities of amino acids

✍ Scribed by Henry B. Bull; Keith Breese; Charles A. Swenson

Publisher: Wiley (John Wiley & Sons)
Year: 1978
Tongue: English
Weight: 537 KB
Volume: 17
Category: Article
ISSN: 0006-3525
DOI: 10.1002/bip.1978.360170421

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The Mettler/Paar precision density meter DMA‐02D has been used to determine the concentration of saturated solutions of amino acids at 20.0, 25.0, and 29.8 °C. The technique has proven itself an elegant and precise method. The solubilities of all of the amino acids with the exceptions of proline, lysine, and cystine have been measured. The Gibbs free energies of transfer from saturated water solution to 1__M__ Na~2~SO~4~ and to 1__M__ Gu·HCL along with the van't Hoff heats and entropies have been calculated. The van't Hoff heats have been compared with the calorimetrically determined heats for some of the amino acids. The Lumry‐Rajender relation between the entropy and heats has been observed. The process of transfer of the amino acids from water to the solvents is primarily enthalpic rather than entropic.

📜 SIMILAR VOLUMES

Representation of solubilities of amino

Representation of solubilities of amino acids using the uniquac model for electrolytes

✍ António M. Peres; Eugénia A. Macedo 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 743 KB

A molecular thermodynamic framework for the representation of the solubilities of several binary systems, amino acids-water (nine systems) and peptides-water (five systems), has been developed and tested. The proposed model takes into account simultaneously the chemical and physical equilibrium. The

Solubility of Amino Acids, Sugars, and P

Solubility of Amino Acids, Sugars, and Proteins

✍ Eugenia Almeida Macedo 📂 Article 📅 2005 🏛 John Wiley and Sons ⚖ 8 KB 👁 1 views

## Abstract For Abstract see ChemInform Abstract in Full Text.

Soluble steroids II. Amino acid derivati

Soluble steroids II. Amino acid derivatives

✍ Winthrop E. Lange; Martin E. Stein 📂 Article 📅 1964 🏛 John Wiley and Sons 🌐 English ⚖ 281 KB

A series of amino acid derivatives of cholesterol, 9a-fluorohydrocortisone, 6u-fluoro-16a-hydroxycortisone-16,17-acetonide, and 2a-methyl-5cr-dihydrotestosterone have been synthesized in a further attempt to provide compounds with increased a ueous solubility. The ac lable hydrosy group of the stero

Solubility of amino acids in mixed solve

Solubility of amino acids in mixed solvent systems

✍ T. E. Needham Jr.; A. N. Paruta; R. J. Gerraughty 📂 Article 📅 1971 🏛 John Wiley and Sons 🌐 English ⚖ 383 KB 👁 2 views

The effects of various solvents and pH on the solubility cbaracteristics of glycine, L-alanine, L-valine, L-phenylalanine, and DL-amino octanoic acid were studied in a series of hydroalcoholic solvent systems. The solubility properties of the amino acids studied were found to be dominated by the a-a

Solubility of amino acids in pure solven

Solubility of amino acids in pure solvent systems

✍ T. E. Needham Jr.; A. N. Paruta; R. J. Gerraughty 📂 Article 📅 1971 🏛 John Wiley and Sons 🌐 English ⚖ 366 KB 👁 2 views

Solubility of amino acids in pure solven

Solubility of amino acids in pure solvent systems

✍ T. E. Needham Jr.; A. N. Paruta; R. J. Gerraughty 📂 Article 📅 1971 🏛 John Wiley and Sons 🌐 English ⚖ 366 KB 👁 2 views

The effects of various solvents and pH on the solubilities of glycine, L-alanine, L-valine, L-phenylalanine, and DL-aminooctanoic acid were studied in a series of pure aqueous and alcoholic solutions. The aqueous solubility was found to be inversely proportional to the size of the nonpolar partion o