Naslov
Adsorption of phenolic acids onto b-glucan

Autori
Matić, Petra ; Jakobek, Lidija ;

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts of 12th World Congress on Polyphenols Applications / - Bon, 2018, 122-122

ISBN
978-2-35609-012-6

Skup
12th World Congress on Polyphenols Applications

Mjesto i datum
Bonn, Njemačka, 25.09.2018. - 28.09.2018

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
phenolic acids ; b-glucan ; adsorption ; bioaccessibility ;

Sažetak
Introduction: Phenolic acids belong to the group of polyphenols. Polyphenols showed that they can interact with food constituents like dietary fiber. Mechanism of these interactions are not completely investigated. To obtain the information about these interactions, adsorption models can be applied. Materials and methods: Adsorption of phenolic acids (cafffeic acid and chlorogenic acid) and dietary fiber (b-glucan) was carried out at different temperatures: 25, 37 and 45 C. The model solutions consisted of b-glucan, phenolic acids and phosphate buffer (pH 5.5). After adsorption equilibrium, the concentration of unadsorbed phenolic acids was determined by the Folin-Ciopcalteu method. The non-linear Langmuir and Freundlich models were applied. Results: The results showed that b-glucan has limited adsorption capacity for phenolic acids on all temperatures. Furthermore, fitted non-linear Langmuir and Freundlich models matched well with experimental data. Due to constants of these models, adsorption process was described. Conclusion: During the adsorption process, phenolic acids adsorbed onto the surface of b-glucan. Adsorption was favourable process. The adsorption capacity for both phenolic acids was the highest at 37 C. Between phenolic acids, caffeic acid showed higher maximum adsorption capacity than chlorogenic acid.

Izvorni jezik
Engleski

Znanstvena područja
Prehrambena tehnologija, Interdisciplinarne biotehničke znanosti

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