Preparation and properties of the pectic gel microparticles based on the Zn 2+ , Fe 3+ and Al 3+ cross-linking cations.

Autor: Günter EA; Institute of Physiology, Komi Science Centre, The Urals Branch of the Russian Academy of Sciences, 50, Pervomaiskaya str., Syktyvkar 167982, Russia. Electronic address: gunter-ea@mail.ru., Popeyko OV; Institute of Physiology, Komi Science Centre, The Urals Branch of the Russian Academy of Sciences, 50, Pervomaiskaya str., Syktyvkar 167982, Russia., Melekhin AK; Institute of Physiology, Komi Science Centre, The Urals Branch of the Russian Academy of Sciences, 50, Pervomaiskaya str., Syktyvkar 167982, Russia., Belozerov VS; Vyatka State University, 36, Moskovskaya str., Kirov 610000, Russia., Martinson EA; Vyatka State University, 36, Moskovskaya str., Kirov 610000, Russia., Litvinets SG; Vyatka State University, 36, Moskovskaya str., Kirov 610000, Russia.
Jazyk: angličtina
Zdroj: International journal of biological macromolecules [Int J Biol Macromol] 2019 Oct 01; Vol. 138, pp. 629-635. Date of Electronic Publication: 2019 Jul 20.
DOI: 10.1016/j.ijbiomac.2019.07.122
Abstrakt: The aim of this work was to evaluate the relationship between the cross-linking cation content in the microparticles, chemical characteristics of pectins and swelling properties of the gel microparticles based on the Zn 2+ , Fe 3+ and Al 3+ cross-linking cations. A significant negative correlation between the Zn 2+ content and DM of pectin indicated that decreasing DM of pectin promoted Zn 2+ binding. The microparticles from the pectins with a higher linearity had a higher content of Fe 3+ . The microparticles from the pectins with a lower Mw, branching of rhamnogalacturonan I, amount of RG, specific viscosity and a higher linearity had a higher content of Al 3+ . The content of the Fe 3+ ions in the microparticles was higher than the Zn 2+ content. The Al 3+ content in the microparticles was lowest. The Fe 3+ and Zn 2+ ions, which are more electronegative, bind more strongly to pectin in comparison with the less electronegative Al 3+ cations. The microparticles with a higher Zn 2+ , Fe 3+ , and Al 3+ content had a lower swelling degree in the simulated digestive fluids. Moreover, the higher swelling of the microparticles can be due to their porous or wrinkled surface. Variation of specific cations and pectins can influence the functionality of the gel microparticles, in particular swelling properties.
(Copyright © 2019 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
Externí odkaz: