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Adsorption of lutein from soybean oil on silicic acid II. Kinetics
Author(s) -
Proctor Andrew,
Snyder Harry E.
Publication year - 1988
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02542526
Subject(s) - lutein , adsorption , silicic acid , chemistry , triglyceride , soybean oil , kinetics , chromatography , food science , biochemistry , organic chemistry , carotenoid , cholesterol , physics , quantum mechanics
Adsorption kinetics of lutein on silicic acid from a crude soybean oil miscella were first order with respect to lutein at small pigment concentrations but zero order above 15 µM. Lutein adsorption was first order with respect to silica. Triglyceride adsorption was first order with respect to triglyceride concentration and adsorbent dose. The adsorption rate constant of lutein was reduced by increasing the triglyceride concentrations relative to that of lutein. Both lutein and triglyceride were reversibly bound. The kinetic data indicated competition between lutein and triglyceride for adsorption sites.