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Adsorption of Red Pigment from Schisandra chinensis Extract Liquor: pigment adsorption

Date:2016/8/23 20:40:23

Adsorption of Red Pigment from Schisandra chinensis Extract Liquor: pigment adsorption

Abstract Schisandra chinensis is used as a traditional Chinese medicine and Schisandra red pigment is an 

important antioxidant helpful in antiaging study. In this work, the Schisandra red pigment was extracted by 

adsorbing the water-soaked liquor of S. chinensis fruit with resin. The kinetics, adsorption isotherms and 

thermodynamics for adsorption of red pigment from S. chinensis were investigated using HPD100 resin. 


The pseudo-second-order kinetic model correlated well to the experimental data. The equilibrium data were 

found to follow the Freundlich adsorption isotherm. The thermodynamic parameters including the changes of 

Gibbs free energy ( G ), entropy ( S ) and enthalpy ( H ) demonstrated that the adsorption process of red 

pigment was spontaneous and endothermic. It was controlled by physical mechanism rather than chemical mechanism.

The models of kinetics, adsorption isotherms and thermodynamics for adsorption of red pigment from Schinensis 

can interpret the adsorption process. They also helped to gave guidance to the purification of red pigment of 

S. chinensis . Practical Applications Kinetics, adsorption isotherms and thermodynamics are helpful in the study

of adsorption process. In this work, they were used to optimize the conditions of adsorption process and 

interpret the adsorption mechanism. The results provided references for the research on red pigment of 

Schisandra chinensis and other pigments, in addition, they were of great significance in further application 

of adsorption technique.