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Citation: SUN Chen, ZHAO Pei-Xi. The Cloud Point Extraction of Glycyrrhizic Acid by a Non-ionic Surfactant System[J]. Chinese Journal of Applied Chemistry, ;2010, 27(11): 1351-1355. doi: 10.3724/SP.J.1095.2010.90882 shu

The Cloud Point Extraction of Glycyrrhizic Acid by a Non-ionic Surfactant System

SUN Chen ,
ZHAO Pei-Xi

Chemistry and Chemical Engineering, College of Henan University of Technology, Zhengzhou 450001

Received Date: 25 December 2009
Revised Date: 22 March 2010

The cloud point system containing Triton X-100 and NaCl at given temperatures was useed as an extracting medium. A detailed study on spectral characteristics and microstructures has been carried out to investigate the process of cloud point extraction of glycyrrhizic acid(GA). The results showed that the wave numbers of H-O and C-O stretching vibration bands in the Fourier transform infrared spectra increased with increasing temperature. Near the cloud point,this change has been strengthened. Main phase bodies in cloud point system have droplet-distribution characteristics and the micelle size in coacervate phase was enlarged after adsorping more GA. Under high concentration of GA,this phenomenon was attributed to the inter crosslinking of micelles in the coacervate phase.
- cloud point extraction,
- Triton X-100,
- glycyrrhizic acid,
- FTIR spectra
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