Volume 42, Issue 11 pp. 2376-2385
Research Article

Measurement of Disodium 5'-Inosinate and Disodium 5'-Guanylate in Aqueous Ethanol by Attenuated Total Reflection Ultraviolet Method

Binghui Li

Binghui Li

South China University of Technology, School of Chemistry and Chemical Engineering, 381 Wushan Road, 510640 Guangzhou, Tianhe District, China

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Yang Song

Yang Song

South China University of Technology, School of Chemistry and Chemical Engineering, 381 Wushan Road, 510640 Guangzhou, Tianhe District, China

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Liangjie Sun

Liangjie Sun

South China University of Technology, School of Chemistry and Chemical Engineering, 381 Wushan Road, 510640 Guangzhou, Tianhe District, China

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Guoqiang Guan

Guoqiang Guan

South China University of Technology, School of Chemistry and Chemical Engineering, 381 Wushan Road, 510640 Guangzhou, Tianhe District, China

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Yanbin Jiang

Corresponding Author

Yanbin Jiang

South China University of Technology, School of Chemistry and Chemical Engineering, 381 Wushan Road, 510640 Guangzhou, Tianhe District, China

Correspondence: Yanbin Jiang ([email protected]), South China University of Technology, School of Chemistry and Chemical Engineering, 381 Wushan Road, Tianhe District, 510640 Guangzhou, China.Search for more papers by this author
First published: 30 July 2019
Citations: 1

Abstract

An online concentration monitoring method was established by using attenuated total reflection ultraviolet (ATR-UV) coupled with a suitable partial least squares regression for a multi-solute crystallization system, namely, disodium 5'-inosinate (IMP) and disodium 5'-guanylate (GMP) in aqueous ethanol. The results indicated that the established method accurately predicted the concentration of IMP and GMP in the solution. The solubility data was measured at various temperatures and ethanol/water mass ratios, and the experimental data was well correlated by applying the modified Apelblat equation and modified Jouyban-Acree model. The implementation of cooling crystallization demonstrates that the developed calibration model is suitable for online concentration monitoring with reasonable accuracy and precision.

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