Interactions of Phenolic Acids and β-Glucan: Studies of Adsorption Isotherms and Thermodynamics
Interactions between polyphenols and dietary fiber might play an important role in polyphenol bioactivities. These interactions can be studied through adsorption processes. The aim of this study was to investigate the adsorption of phenolic acids (p-coumaric acid, caffeic acid, chlorogenic acid)...
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| Format: | Article |
| Language: | English |
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Croatian Society of Chemical Engineers
2021-07-01
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| Series: | Chemical and Biochemical Engineering Quarterly |
| Subjects: | |
| Online Access: | http://silverstripe.fkit.hr/cabeq/assets/Uploads/06-2-2021.pdf |
| _version_ | 1819122953948758016 |
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| author | P. Matić Š. Ukić L. Jakobek |
| author_facet | P. Matić Š. Ukić L. Jakobek |
| author_sort | P. Matić |
| collection | DOAJ |
| description | Interactions between polyphenols and dietary fiber might play an important role in
polyphenol bioactivities. These interactions can be studied through adsorption processes.
The aim of this study was to investigate the adsorption of phenolic acids (p-coumaric
acid, caffeic acid, chlorogenic acid) onto dietary fiber – β-glucan. Adsorption was carried
out at different temperatures (25, 37, and 45 °C) and pH values (1.5, 5.5, and 10). Non-linear isotherm adsorption models (Langmuir, Freundlich, Dubinin-Radushkevich, Temkin, Hill) were applied to analyze the data. Experimentally determined adsorption capacities showed some fluctuations with temperature and pH. Adsorption isotherms modelled the experimentally determined adsorption capacities well. According to isotherm parameters, it can be suggested that the adsorption was a physical process with non-covalent bonding at all temperatures and pH. Thermodynamic parameters showed that the adsorption was spontaneous (except for chlorogenic acid) and exothermic. Adsorption isotherms and thermodynamics gave useful information about phenolic acid –β-glucan interactions. |
| first_indexed | 2024-12-22T07:00:39Z |
| format | Article |
| id | doaj.art-d76823cc582d479488f947ea1c7d168f |
| institution | Directory Open Access Journal |
| issn | 0352-9568 1846-5153 |
| language | English |
| last_indexed | 2024-12-22T07:00:39Z |
| publishDate | 2021-07-01 |
| publisher | Croatian Society of Chemical Engineers |
| record_format | Article |
| series | Chemical and Biochemical Engineering Quarterly |
| spelling | doaj.art-d76823cc582d479488f947ea1c7d168f2022-12-21T18:34:49ZengCroatian Society of Chemical EngineersChemical and Biochemical Engineering Quarterly0352-95681846-51532021-07-0135217718710.15255/CABEQ.2020.1902Interactions of Phenolic Acids and β-Glucan: Studies of Adsorption Isotherms and ThermodynamicsP. Matić0Š. Ukić1L. Jakobek2Josip Juraj Strossmayer University of Osijek, Faculty of Food Technology Osijek, Department of Applied Chemistry and Ecology, Franje Kuhača 18, HR 31000 Osijek, CroatiaUniversity of Zagreb, Faculty of Chemical Engineering and Technology, Department of Analytical Chemistry, Marulićev trg 19, HR 10000 Zagreb, CroatiaJosip Juraj Strossmayer University of Osijek, Faculty of Food Technology Osijek, Department of Applied Chemistry and Ecology, Franje Kuhača 18, HR 31000 Osijek, CroatiaInteractions between polyphenols and dietary fiber might play an important role in polyphenol bioactivities. These interactions can be studied through adsorption processes. The aim of this study was to investigate the adsorption of phenolic acids (p-coumaric acid, caffeic acid, chlorogenic acid) onto dietary fiber – β-glucan. Adsorption was carried out at different temperatures (25, 37, and 45 °C) and pH values (1.5, 5.5, and 10). Non-linear isotherm adsorption models (Langmuir, Freundlich, Dubinin-Radushkevich, Temkin, Hill) were applied to analyze the data. Experimentally determined adsorption capacities showed some fluctuations with temperature and pH. Adsorption isotherms modelled the experimentally determined adsorption capacities well. According to isotherm parameters, it can be suggested that the adsorption was a physical process with non-covalent bonding at all temperatures and pH. Thermodynamic parameters showed that the adsorption was spontaneous (except for chlorogenic acid) and exothermic. Adsorption isotherms and thermodynamics gave useful information about phenolic acid –β-glucan interactions.http://silverstripe.fkit.hr/cabeq/assets/Uploads/06-2-2021.pdfadsorption mechanismphenolic acidsdietary fiberadsorption models |
| spellingShingle | P. Matić Š. Ukić L. Jakobek Interactions of Phenolic Acids and β-Glucan: Studies of Adsorption Isotherms and Thermodynamics Chemical and Biochemical Engineering Quarterly adsorption mechanism phenolic acids dietary fiber adsorption models |
| title | Interactions of Phenolic Acids and β-Glucan: Studies of Adsorption Isotherms and Thermodynamics |
| title_full | Interactions of Phenolic Acids and β-Glucan: Studies of Adsorption Isotherms and Thermodynamics |
| title_fullStr | Interactions of Phenolic Acids and β-Glucan: Studies of Adsorption Isotherms and Thermodynamics |
| title_full_unstemmed | Interactions of Phenolic Acids and β-Glucan: Studies of Adsorption Isotherms and Thermodynamics |
| title_short | Interactions of Phenolic Acids and β-Glucan: Studies of Adsorption Isotherms and Thermodynamics |
| title_sort | interactions of phenolic acids and β glucan studies of adsorption isotherms and thermodynamics |
| topic | adsorption mechanism phenolic acids dietary fiber adsorption models |
| url | http://silverstripe.fkit.hr/cabeq/assets/Uploads/06-2-2021.pdf |
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