A comprehensive study on the effect of bentonite fining on wine charged model molecules
Copyright © 2020 Elsevier Ltd. All rights reserved..
In bottled wines, haze and turbidity are phenomena to be avoided. Since bentonite fining is a common process to clarify wines removing heat unstable proteins, a theoretical study on the adsorption of three Charged Model Molecules (CMMs, egg albumin, polyphenols and riboflavin) was carried out to deep comprehend this chemical phenomenon. Four bentonites were adopted and finely characterized together with the potential release of Na+ and Ca2+ cations, revealing suitable for RT albumin removal within 120 min. Better results in terms of adsorbed quantity were achieved by adopting 12%v/v EtOH/H2O solvent and by swelling bentonites for 24 h before use. With the most performing sample (Na/Ca_0.27), a comprehensive study on simultaneous adsorption of the three CMMs was performed, resulting in polyphenols adsorption increase due to their interactions with albumin. Notwithstanding the majority of albumin and riboflavin was successfully removed, ca. 40-50% of tested polyphenols was preserved.
| Errataetall: |
ErratumIn: Food Chem. 2022 Jan 1;366:130537. - PMID 34293543 |
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| Medienart: |
E-Artikel |
| Erscheinungsjahr: |
2021 |
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| Erschienen: |
2021 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:338 |
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| Enthalten in: |
Food chemistry - 338(2021) vom: 15. Feb., Seite 127840 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Pargoletti, E [VerfasserIn] |
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| Links: |
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| Themen: |
1302-78-9 |
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| Anmerkungen: |
Date Completed 07.12.2020 Date Revised 22.07.2021 published: Print-Electronic ErratumIn: Food Chem. 2022 Jan 1;366:130537. - PMID 34293543 Citation Status MEDLINE |
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| doi: |
10.1016/j.foodchem.2020.127840 |
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| 520 | |a In bottled wines, haze and turbidity are phenomena to be avoided. Since bentonite fining is a common process to clarify wines removing heat unstable proteins, a theoretical study on the adsorption of three Charged Model Molecules (CMMs, egg albumin, polyphenols and riboflavin) was carried out to deep comprehend this chemical phenomenon. Four bentonites were adopted and finely characterized together with the potential release of Na+ and Ca2+ cations, revealing suitable for RT albumin removal within 120 min. Better results in terms of adsorbed quantity were achieved by adopting 12%v/v EtOH/H2O solvent and by swelling bentonites for 24 h before use. With the most performing sample (Na/Ca_0.27), a comprehensive study on simultaneous adsorption of the three CMMs was performed, resulting in polyphenols adsorption increase due to their interactions with albumin. Notwithstanding the majority of albumin and riboflavin was successfully removed, ca. 40-50% of tested polyphenols was preserved | ||
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