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http://dx.doi.org/10.5012/jkcs.2009.53.4.427

Study of Thermodynamic Mechanism for Using Organic Solvent to Extract Isoflavone from Soybean Residuals  

Hua, Li (School of Chemical and Energy Engineering, Zhengzhou University)
Guoqin, Hu (School of Chemical and Energy Engineering, Zhengzhou University)
Dan, Li (School of Chemical and Energy Engineering, Zhengzhou University)
Publication Information
Journal of the Korean Chemical Society / v.53, no.4, 2009 , pp. 427-431 More about this Journal
Abstract
The thermodynamical mechanism of the extraction of soybean isoflavones from soybean residuals using organic solvent method has been studied. On the basis of experiments, a simple model for determining the distribution coefficients in organic solvent extraction was employed to calculate the thermodynamical functions between $K,\;{\Delta}H^0,\;{\Delta}S^0\;and\;{\Delta}G^0$ in the soybean isoflavones extraction process. The results show that the soybean isoflavones extraction is an endothermic and an entropy-increasing process: the ${\Delta}G^0$ decreases when the temperature arises.
Keywords
Soybean isoflavones; Organic solvent; Extraction; Thermodynamic mechanism; Soybean residuals;
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