The Study of Adsorption Kinetics of Flavan-3-Ols, Dihydrochalcones and Anthocyanins onto Barley β-Glucan

Croatica Chemica Acta

article

Petra Matić¹  Šime Ukić²  Lidija Jakobek¹ 

[1] Department of Applied Chemistry and Ecology, Faculty of Food Technology Osijek, Josip Juraj Strossmayer University of Osijek;Department of Analytical Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb

关键词: flavan-3-ol;    dihydrochalcone;    anthocyanin;    β-D-glucan;    kinetic models;   

DOI  :  10.5562/cca3900

学科分类：化学（综合）

来源: Croatica Chemica Acta

【 摘 要 】

Polyphenols can interact with dietary fibers and these interactions can affect polyphenols bioactivities. The interactions can be studied with the adsorption process, and adsorptions of flavan-3-ols (procyanidin B1, procyanidin B2), dihydrochalcones (phloretin, phloretin-2-glucoside), and anthocyanins (cyanidin-3-glucoside, cyanidin-3-galactoside) onto β-D-glucan from barley were studied in this work. The intention was to reveal the kinetics of the adsorption process. Adsorption was carried out using model solutions at room temperature. The results showed that in the flavan-3-ol group procyanidin B1 showed higher adsorption capacity than procyanidin B2. Phloretin showed a higher adsorption capacity than phloretin-2-glucoside in the dihydrochalcone group and anthocyanins showed similar adsorption capacities. Parameter k1 for all polyphenols was in the range from 0.30 h−1 to 0.93 h−1. Adsorption capacity qe for all polyphenols ranged from 2.90 mmol g−1 to 9.76 mmol g−1, parameter k2 was in the range 70−225 g mol−1 h−1, and adsorption capacities qe ranged from 3.70 mmol g−1 to 9.90 mmol g−1.

【 授权许可】

CC BY