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Abstract <p>Isotherms were recorded for the adsorption of chicken egg lysozyme and bovine serum albumin (BSA) on MFI zeolites with different concentrations of acid sites (from 15 to 1000 μmol/g). The maximum adsorption capacities were evaluated, and the correlation between acid site concentration and protein adsorption capacity was identified. The sample with the highest acidity exhibited the highest adsorption capacity. The protein adsorption reduced the total acid site concentration by 20–30% and simultaneously increased the relative content of weak sites. Furthermore, the adsorption affected the IR spectra of the proteins.</p>

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Effects of MFI Zeolite Acidity on Protein Adsorption

  • 期刊论文

  • 发表日期：

    2025年4月1日

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  • L. F. Atyaksheva,
  • E. P. Andriako,
  • D. O. Bachurina,
  • V. A. Vorobkalo,
  • A. V. Efimov,
  • A. V. Smirnov,
  • B. N. Tarasevich

摘要

Abstract

Isotherms were recorded for the adsorption of chicken egg lysozyme and bovine serum albumin (BSA) on MFI zeolites with different concentrations of acid sites (from 15 to 1000 μmol/g). The maximum adsorption capacities were evaluated, and the correlation between acid site concentration and protein adsorption capacity was identified. The sample with the highest acidity exhibited the highest adsorption capacity. The protein adsorption reduced the total acid site concentration by 20–30% and simultaneously increased the relative content of weak sites. Furthermore, the adsorption affected the IR spectra of the proteins.