Thermodynamic Properties of Solutions of Amino Acids and Related Substances
نویسندگان
چکیده
The effect of temperature on the thermodynamic ionization constants of compounds with dipole moments greater than those of the a-amino acids has not heretofore been studied. In this paper results are given for glycylglycine and c-aminocaproic acid, two substances with similar dipole moments. Measurements are also included for aspartic acid, which has recently been studied at 25” in cells without liquid junction (1).
منابع مشابه
The use of topological indices to predict thermodynamic properties of amino acids derivatives
In the present investigation the applicability of various topological indices are tested for the QSPR study on 80 amino acids derivatives. Relationship between the Randic' (1X), Balaban (J), Szeged (Sz), Harary (H), Wiener (W), Hyper-Wiener (WW) and Wiener Polarity (WP) indices to the thermodynamic Properties such as thermal energy Eth (J/mol) and heat capacity (CV J/mol. K) of amino acids is r...
متن کاملThermodynamic-Biochemical Study of Complexes of Intermediate Elements with α-Amino Acids in Some Proteins with Active Site
In this paper, the quantum chemistry calculations related to the structural parameter of the chromite and molybdate anions and the complexes obtained from them with the glycine and alanine amino acids were performed. The calculations were carried out using HF and DFT methods and in the base series 6-31G *. Thermodynamic studies related to the formation of complexes have been considered and thei...
متن کاملThe Role of Different Sugars, Amino Acids and Few Other Substances in Chemotaxis Directed Motility of Helicobacter Pylori
Objective(s) Motility plays a major role in pathogenicity of Helicobacter pylori, yet there is scarce data regarding its chemotactic behaviour. The present study was designed to investigate the chemotactic responses of local isolates of H. pylori towards various sugars, amino acids, as well as some other chemical substances. Materials and Methods Chemotaxis was assayed by a modified Adler’s...
متن کاملTheoretical study of the solvent effects on the thermodynamic functions of Alanine and Valine Amino Acids
Using Gaussian 03, software the thermodynamic functions such as Gibbs free energy, G, Enthalpy, H, and Entropy, S, of Alanine and Valine amino acids were theoretically studied at different solvents. First, the Density Functional Theory (B3LYP) level with 3-21G, 6-31G and 6-31+G basis sets were employed to optimization of isolated Alanine and Valine amino acids in the gas phase. Moreover, Vib...
متن کاملApplication of GMA Equation of State to Study Thermodynamic Properties of 2-Amino-2-methyl-1-propanol as an Efficient Absorbent for CO2
Alkanolamine solutions such as 2-amino-2-methyl-1-propanol (AMP) are widely used in chemical industries for the removal of acid gases such as CO2 and H2S. In this work, the density of CO2, AMP, water, and AMP solutions using the Goharshadi–Morsali–Abbaspour Equation of State “GMA EoS” in the extended 50-degree range of temperatures (313.06-362.65 K) and pressures (0.5-40 MPa) was calculated. Th...
متن کامل