Volumetric Properties of Amino Acids in Aqueous D-Xylose Solutions at 298.15 K

Chem. J. Chinese Universities

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Volumetric Properties of Amino Acids in Aqueous D-Xylose Solutions at 298.15 K

XU Li¹, WANG Xu¹, MA Lin², LIN Rui-Sen¹

1. Department of Chemistry, Zhejiang University, Hangzhou 310027, China;
2. College of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China

Received:2006-01-18 Revised:1900-01-01 Online:2006-08-10 Published:2006-08-10
Contact: LIN Rui-Sen

Abstract

Abstract: Densities of glycine, L-alanine and L-serine in various aqueous D-xylose solutions were measured at 298.15 K by an Anton Paar Model 55 densimeter. Apparent molar volumes, limiting partial molar volumes and hydration numbers for these amino acids were calculated. The transfer volumes from water to aqueous D-xylose solutions were obtained and discussed in terms of the structural hydration interaction model. The results show that all of the transfer volumes are positive, and increase with increasing xylose concentration; the side-chain contributions to the transfer volumes are highly related to the nature of side-chain groups; the hydration numbers for the three amino acids in solutions decrease with increasing xylose concentration.

Key words: Amino acid, Aqueous D-xylose solution, Partial molar volume

CLC Number:

O645.12

TrendMD:

XU Li¹, WANG Xu¹, MA Lin², LIN Rui-Sen¹. Volumetric Properties of Amino Acids in Aqueous D-Xylose Solutions at 298.15 K[J]. Chem. J. Chinese Universities, doi: .

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Volumetric Properties of Amino Acids in Aqueous D-Xylose Solutions at 298.15 K

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