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Chaabane L, Loupiac C, Bouyer F, Bezverkhyy I, Foley S, Assifaoui A. Adsorption of β-Lactoglobulin on Thiol-Functionalized Mesoporous Silica. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024. [PMID: 39037867 DOI: 10.1021/acs.langmuir.4c01099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/24/2024]
Abstract
SBA-15 mesoporous materials were synthesized with different pore sizes (5 and 10 nm) and thiol-functionalized groups and then characterized to describe their ability to differentially adsorb β-lactoglobulin (BLG), a globular protein with an ellipsoid shape measuring 6.9 nm in length and 3.6 nm in width. All adsorption experiments showed that the adsorption capacities of mesoporous materials for BLG were dependent on the duration of contact between the two materials (mesoporous material and BLG) and the initial BLG concentration. It was also shown that the pore sizes and thiol groups of SBA-15-based adsorbents are important factors for the BLG adsorption capacities. Among the tested adsorbents, thiol-functionalized SBA-15 with a 10 nm pore size (SBA-15-SH-10) showed the highest adsorption capacity (0.560 g·g-1) under optimal experimental conditions. Kinetics studies demonstrated that the adsorption occurs predominantly inside the pores, with interactions occurring on heterogeneous surfaces. In addition, the thermodynamic parameters indicate a spontaneous and exothermic behavior of the BLG adsorption process onto the thiol-functionalized SBA-15 mesoporous adsorbent. Finally, the characterization of the SBA-15-SH-10 adsorbent at 308 K showed the occurrence of an oxidation reaction of the thiol groups to sulfonate groups during the adsorption process as confirmed by Raman spectroscopy. The spectra recorded after adsorption of the protein showed that this adsorption did not affect the secondary structure of the protein.
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Affiliation(s)
- Laroussi Chaabane
- Université Bourgogne Franche-Comté, Institut Agro, Université Bourgogne, INRAE, UMR PAM 1517, 21000 Dijon, France
| | - Camille Loupiac
- Université Bourgogne Franche-Comté, Institut Agro, Université Bourgogne, INRAE, UMR PAM 1517, 21000 Dijon, France
| | - Frédéric Bouyer
- Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS─Université de Bourgogne, BP 47 870, 21078 Dijon Cedex, France
| | - Igor Bezverkhyy
- Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS─Université de Bourgogne, BP 47 870, 21078 Dijon Cedex, France
| | - Sarah Foley
- Laboratoire Chrono-environnement (UMR CNRS 6249), Université de Bourgogne Franche-Comté, F-25000 Besançon, France
| | - Ali Assifaoui
- Université Bourgogne Franche-Comté, Institut Agro, Université Bourgogne, INRAE, UMR PAM 1517, 21000 Dijon, France
- Department of Pharmaceutical Technology, School of Pharmacy, Université de Bourgogne, 7 Bd Jeanne d'Arc, 21079 Dijon, France
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Efficient separation of uranium in solution by ZnFe2O4 doped with TiO2: Adsorption behaviors and mechanism study. ADV POWDER TECHNOL 2022. [DOI: 10.1016/j.apt.2022.103725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Relative assessment of activated carbon and Nano-Material based adsorbents used for obliteration of THMs precursors - regeneration and techno-economic feasibility analysis. ADV POWDER TECHNOL 2022. [DOI: 10.1016/j.apt.2022.103700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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