Physicochemical Properties of Amino Acids in Aqueous Caffeine Solution at 25, 30, 35 and 40 ℃

Physicochemical Properties of Amino Acids in Aqueous Caffeine Solution at 25, 30, 35 and 40 ℃

ALI A.;SABIR S.;SHAHJAHAN;HYDER S.

【期刊名称】《中国化学（英文版）》 【年(卷),期】2006(024)011

【摘要】Density, viscosity, and refractive index, for glycine, DL-alanine, L-serine and DL-valine have been determined in aqueous solution of 0.05 mol/kg caffeine as a function of amino acid (AA) concentration at 25, 30, 35, and 40 ℃.The density data have been used to compute apparent molar volume. The partial molar volume (limiting apparent molar volume) was obtained by applying the Masson's equation. The viscosity data have been analyzed by means of Jones-Dole equation. The values of Falkenhagen coefficient and Jones-Dole coefficient thus obtained are used to interpret the solute-solute and solute-solvent interactions, respectively. Hydration number was also computed. The transition-state theory was applied to obtain the activation parameters of viscous flow, I.e., free energy of activation per mole of solvent, and solute. The enthalpy and entropy of activation of viscous flow were computed for the system. Refractive index was used to calculate molar refractivity of the mixtures. The results have been interpreted in the lightof various interactions occurring between the components of the mixtures under applied experimental conditions.

【总页数】7页(1547-1553)

【关键词】amino acid;caffeine;Falkenhagen coefficient;Jones-Dole coefficient;molecular interactions

【作者】ALI A.;SABIR S.;SHAHJAHAN;HYDER S.

【作者单位】Department of Chemistry, Jamia Millia Islamia (Central University), New Delhi-110025, India;Department of Chemistry, Jamia Millia Islamia (Central University), New Delhi-110025, India;Department of Chemistry, Jamia Millia Islamia (Central University), New Delhi-110025, India;Department of Chemistry, Jamia Millia Islamia (Central University), New Delhi-110025, India 【正文语种】中文 【中图分类】O6 【文献来源】

https://www.zhangqiaokeyan.com/academic-journal-cn_chinese-journal-chemistry_thesis/0201251286845.html 【相关文献】

1.Effect of Temperature on Volumetric and Viscometric Properties of Homologous Amino Acids in Aqueous Solutions of Metformin Hydrochloride [J], K.Rajagopal; S.S.Jayabalakrishnan

2.Chemical Interaction UO2Cl2 with α-and β-Amino Acids in Aqueous and Organic Solution [J], Aibassov Erkin Zhakenovich; Kenzhaliev Bagdaulet Kenzhalievich2; Tussupbaev Nessipbay Kuandykovich;

Berkinbaeva Ainura; Chukmanova Marzhan; Iskhakova Renata; Bulenbayev Maxat Zhumabaevich

3.Rebinding kinetics of dissociated amino acid ligand and carbon monoxide to ferrous microperoxidase-11 in aqueous solution [J], ZHONG RangBo; LU Rong; YU AnChi

4.Studies on Partial Molar Volumes of Some Amino Acids and Their Groups in Aqueous Solutions from 293.15 K to 333.15 K [J], 赵长伟; 马沛生; 夏淑倩

5.Modified activated carbons with amino groups and their copper adsorption properties in aqueous solution [J], Mohammad Hassan Mahaninia; Paria Rahimian; Tahereh Kaghazchi

以上内容为文献基本信息，获取文献全文请下载