Antocijanini su spojevi koji se nalaze u aroniji, pripadaju skupini polifenolnih spojeva, a pokazali su biaktivna svojstva. Na njihove bioaktivnosti mogu utjecati interakcije s vlaknima kao što je β-glukan te ih je zbog toga potrebno istražiti. U tu svrhu može poslužiti istraživanje procesa adsorpcije antocijanina na β-glukan. U ovom radu istražena je adsorpcija antocijanina iz aronije na β-glukanu, a sam proces analiziran je jednadžbama Frenudlichove i Langmuirove adsorpcijske izoterme. Eksperimentalni adsorpcijski kapaciteti \((q_{e})\) te teorijski maksimalni kapaciteti dobiveni iz Langmuirove izoterme \((q_{m})\) veći su za cijanidin-3-galaktozid i cijanidin-3-arabinozid u usporedbi s kapacitetom cijanidin-3-glukozida i cijanidin-3-ksilozida. Parametar 1/n iz Freundlichove izoterme pokazao je da je adsorpcija antocijanina favorizirana. Interakcije antocijanina i β-glukana mogu se istražiti procesom adsorpcije, a parametri adsorpcijskih izotermi imaju mogućnost dati dodatne informacije o procesu adsorpcije. Anthocyanins are compounds found in chokeberry, belong to the group of polyphenolic compounds, and have shown biactive properties. Their bioactivities may be affected by interactions with fibers such as β-glucan and therefore need to be investigated. Research into the adsorption process of anthocyanins to β-glucan can serve this purpose. In this study, the adsorption of anthocyanins from chokeberry onto β-glucan was investigated, and the process itself was analyzed by the equations of the Frenudlich and Langmuir adsorption isotherms. The experimental adsorption capacities \((q_{e})\) and the theoretical maximum capacities obtained from the Langmuir isotherm \((q_{m})\) were higher for cyanidin-3-galactoside and cyanidin-3-arabinoside compared to the capacities of cyanidin-3-glucoside and cyanidin-3-xyloside. Parameter 1/n from the Freundlich isotherm showed that anthocyanin adsorption was favored. Interactions between anthocyanins and β-glucans can be investigated by the adsorption process, and the parameters of adsorption isotherms have the ability to provide additional information about the adsorption process.
