Naslov
Simulated Gastric and Intestinal Fluid Electrolyte Solutions as an Environment for the Adsorption of Apple Polyphenols onto β-Glucan

Autori
Jakobek, Lidija ; Strelec, Ivica ; Kenjerić, Daniela ; Šoher, Lidija ; Tomac, Ivana ; Matić, Petra

Izvornik
Molecules (1420-3049) 27 (2022), 19; 6683, 14

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
dietary fiber ; adsorption capacity ; gastrointestinal tract ; phenolic compounds

Sažetak
Interactions with dietary fibers in the gastrointestinal tract might affect the potential bioactivities of phenolic compounds. In this study, the interactions between apple phenolic compounds and β-glucan (a dietary fiber) were studied by studying the adsorption process in simulated gas-tric and intestinal fluid electrolyte solutions. Phenolic compounds were extracted from apples, adsorbed onto β-glucan (2 h, 37 °C, in gastric or intestinal fluid electrolyte solutions), and de-termined using high performance liquid chromatography. Phenolic compounds (flavan-3-ols, flavonols, phenolic acids, and dihydrochalcone) were stable in the gastric fluid (pH 3). In the intestinal fluid (pH 7), flavan-3-ols were not found and chlorogenic acid isomerized. Polyphenols from the apple peel (up to 182 and 897 mg g−1) and flesh (up to 28 and 7 mg g−1) were adsorbed onto β-glucan in the gastric and intestinal fluids, respectively. The adsorption was affected by the initial concentration of the polyphenols and β-glucan and by the environment (either gastric or intestinal fluid electrolyte solution). By increasing the initial polyphenol amount, the quantity of adsorbed polyphenols increased. Increasing the amount of β-glucan decreased the amount adsorbed. The results can be helpful in explaining the fate of phenolic compounds in the gastrointestinal tract.

Izvorni jezik
Engleski

Znanstvena područja
Prehrambena tehnologija, Interdisciplinarne biotehničke znanosti

Napomena
This article belongs to the Special Issue Bioactive
Compounds and Antioxidant Activity of Extracts from
Different Natural Plants

POVEZANOST RADA