Maltodextrin de 4 7

Mili-Q system (Millipore, Bedford, MA, USA) was applied for the purification of distilled water. Kemika d.d. (Zagreb, Croatia) supplied ethanol (96%), methanol, sodium chloride, Fe (III) chloride hexahydrate, sodium acetate (99%), sodium bicarbonate, and HPLC grade formic acid (99%). Sigma Aldrich (St. Louis, MO, USA) supplied maltodextrin (DE 4–7), bile salts, porcine pancreatin, porcine gastric mucosa pepsin, and 2,2-diphenyl-1-(2,4,6- trinitrophenyl) hydrazyl (DPPH), as well as standards of quercetin-3-glucoside, myricetin, gallic, syringic, ferulic, protocatechuic, caffeic, chlorogenic, p-coumaric, and rosmarinic acid. Gum arabic, β-cyclodextrin, Trolox, and 2,4,6-tri(2-pyridyl)-s-triazine (TPTZ) were obtained from Acros Organics (Geel, Belgium). Honeywell Riedel-de-Haën (Charlotte, NC, USA) supplied fluorescein sodium salt, while J.T.Baker (Deventer, The Netherlands) supplied glacial acetic acid, hydrochloric acid (37%), and HPLC grade acetonitrile. Extrasynthese (Genay, France) supplied standards of procyanidin B2, rutin, kaempferol-3-glucoside, luteolin, apigenin, catechin, epigallocatechin gallate, and epicatechin gallate. Methanol (ethanol with 0.5% v/v DMSO for apigenin) stock solutions of the standards were used to produce five working standard dilutions.

Distilled water was obtained using the Milli-Q water purification system (Millipore, Bedford, MA, USA). Ethanol (96%), sodium acetate (99%) and iron (III) chloride hexahydrate were purchased from Kemika d.d. (Zagreb, Croatia), methanol and sodium bicarbonate from Gram-mol d.o.o. (Zagreb, Croatia), and sodium chloride from Lach-ner (Neratovice, Czech Republic). Maltodextrin (DE 4–7) was procured from Sigma-Aldrich (St. Louis, MO, USA), and β-cyclodextrin, gum arabic, 2,4,6-tri(2-pyridyl)-s-triazine (TPTZ) and 6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid (Trolox) were from Acros Organics (Geel, Belgium). Pepsin, pancreatin, bile salts and 2,2-diphenyl-1-(2,4,6-trinitrophenyl)hydrazyl (DPPH) were obtained from Sigma-Aldrich (St. Louis, MO, USA) and hydrochloric acid (37%) from Carlo Erba Reagents (Val-de-Reuil, France), while acetic acid was purchased from J.T.Baker (Deventer, The Netherlands). Standards for gallic acid, chlorogenic acid, protocatechuic acid, synaptic acid, ferulic acid, quinic acid, caffeic acid, p-coumaric acid, esculetin, quercetin-3-glucoside, kaempferol-3-glucoside, scopoletin and myricetin were obtained from Sigma-Aldrich (St. Louis, MO, USA) and catechin, epigallocatechin gallate, epicatechin gallate, luteolin, naringenin and apigenin were obtained from Extrasynthese (Genay, France).