Abstract
ABSTRACT: Three standard proteins—bovine serum albumin (BSA), ovalbumin (OVAL), and lysozyme (LYS)—were used to evaluate metal oxide adsorption isotherms. The isotherms of BSA adsorbed on powdered ZrO2 and those of LYS adsorbed on pellets of ZrO2 or spheres of Al2O3 at pH 3.5 were well fitted by the Langmuir model. The adsorption curve of OVAL on powdered ZrO2 showed an inflection point at the same pH. The adsorption curves obtained from the other systems (protein‐metal oxide) were unfavorable. Protein adsorption of a white wine onto zirconium oxide showed adsorption selectivity. Zirconium had a preference for removing the unstable proteins, and that it could be used to stabilize white wines.
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