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Adsorption of Red Pigment from Schisandra chinensis Extract Liquor
Author(s) -
Sun YuanYuan,
Xiao QingGui,
Tang HaiYan,
Zhao XiaoFei,
Xu HongBin,
Zhang Yi
Publication year - 2017
Publication title -
journal of food process engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.507
H-Index - 45
eISSN - 1745-4530
pISSN - 0145-8876
DOI - 10.1111/jfpe.12429
Subject(s) - adsorption , schisandra chinensis , chemistry , freundlich equation , pigment , gibbs free energy , endothermic process , kinetics , thermodynamics , enthalpy , chromatography , organic chemistry , medicine , physics , alternative medicine , pathology , traditional chinese medicine , quantum mechanics
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 (Δ G ), entropy (Δ S ) and enthalpy (Δ 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 S. chinensis 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.