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Adsorption between Quercetin Derivatives and β-Glucan Studied with a Novel Approach to Modeling Adsorption Isotherms

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Faculty of Food Technology Osijek, Department of Applied Chemistry and Ecology, J. J. Strossmayer University of Osijek, Franje Kuhača 20, HR 31000 Osijek, Croatia
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Faculty of Chemical Engineering and Technology, Department of Analytical Chemistry, University of Zagreb, Marulićev trg 19, HR 10000 Zagreb, Croatia
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Department of Mathematics, J. J. Strossmayer University of Osijek, Trg Ljudevita Gaja 6, HR 31000 Osijek, Croatia
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Department of Statistics and Data Science, Yale University, 24 Hillhouse Ave., New Haven, CT 06511, USA
*
Authors to whom correspondence should be addressed.
Appl. Sci. 2020, 10(5), 1637; https://doi.org/10.3390/app10051637
Received: 24 January 2020 / Revised: 16 February 2020 / Accepted: 27 February 2020 / Published: 29 February 2020
(This article belongs to the Section Food Science and Technology)
Interactions between polyphenols and fibers are important for polyphenol bioactivities, and have been studied in vitro with adsorption process and isotherms. However, the theoretical interpretations of adsorption potentially can be affected by the method of isotherm modeling. The aim was to study the interactions between β-glucan and quercetin derivatives (quercetin-3-glucoside, quercetin-3-galactoside, quercetin-3-rhamnoside) by studying adsorption, and to potentially improve the modeling of adsorption isotherms. Quercetin derivatives were determined by using spectrophotometric method. Experimental results were modeled with Langmuir, Dubinin-Radushkevich, and Hill isotherms using non-linear regression, linear regression, and improved non-linear regression. For improved non-linear regression, code in the R programming language was developed. All quercetin derivatives adsorbed onto the surface of β-glucan. Improved non-linear regression gave somewhat lower errors and may be the most appropriate for adsorption interpretation. According to isotherms obtained with improved regression, it may be suggested that adsorption is higher for rhamnoside and glucoside of quercetin than for quercetin-3-galactoside which agrees with experimental results. Adsorption could be a physical process. The spatial arrangement of hydroxyl (OH) groups on the glycoside part of quercetin could affect the adsorption. In conclusion, a novel approach using improved non-linear regression has been shown to be a useful, novel tool for adsorption interpretation. View Full-Text
Keywords: adsorption isotherms; Langmuir; Dubinini-Radushkevich; Hill; interactions; improved non-linear regression adsorption isotherms; Langmuir; Dubinini-Radushkevich; Hill; interactions; improved non-linear regression
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MDPI and ACS Style

Jakobek, L.; Matić, P.; Kraljević, Š.; Ukić, Š.; Benšić, M.; Barron, A.R. Adsorption between Quercetin Derivatives and β-Glucan Studied with a Novel Approach to Modeling Adsorption Isotherms. Appl. Sci. 2020, 10, 1637. https://doi.org/10.3390/app10051637

AMA Style

Jakobek L, Matić P, Kraljević Š, Ukić Š, Benšić M, Barron AR. Adsorption between Quercetin Derivatives and β-Glucan Studied with a Novel Approach to Modeling Adsorption Isotherms. Applied Sciences. 2020; 10(5):1637. https://doi.org/10.3390/app10051637

Chicago/Turabian Style

Jakobek, Lidija; Matić, Petra; Kraljević, Šima; Ukić, Šime; Benšić, Mirta; Barron, Andrew R. 2020. "Adsorption between Quercetin Derivatives and β-Glucan Studied with a Novel Approach to Modeling Adsorption Isotherms" Appl. Sci. 10, no. 5: 1637. https://doi.org/10.3390/app10051637

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