Evaluation of oxidation-reduction properties and diffusion mechanisms of extracts containing alginic biogels

The results of the oxidation-reduction state of various media (algin biogels, aquatic ecosystems, colloidal dispersed and emulsion systems) obtained in numerous studies allow us to better evaluate the mechanisms and identify the features of their stability. The dispersion of stabilized emulsions depends on the particle size, the energy of their adsorption on the interfacial surface. Molecules of surfactants, nanoparticles, can both be adsorbed on the interphase surface and desorbed. Nanoparticles of deamidated gliadin and tannic acid stabilize an emulsion with a high content of the internal phase. Dependences of invert emulsions on a polar liquid (water) are revealed. Stability of emulsions obtained using synthesized emulsifiers is established. Alginic biogels stabilize the structure of jellies and increase the viscosity of these systems. The use of biogels in emulsion media imparts stability and non-separation to them for a long period. Obtaining microparticles of this gel in the structure of jelly or emulsion is insignificant, since the concentration of the used Na-alginate remains constant. The aim of the work was to study the oxidation-reduction properties and diffusion mechanisms of extracts containing alginic biogels. Materials and methods of research: Working solutions were prepared in distilled water. Aqueous and alcoholic ultrasonic extracts of algae (fucus, laminaria, chlorella) were used for the studies. The electrochemical properties of the analyzed substance in solution were determined by cyclic voltammetry (CVA). The dry matter content was determined by refractometric method on an IRF-454 B2M refractometer. The oxidation-reduction properties, charge-discharge mechanisms and electrochemical stability of extracts containing alginic biogels were estimated. It was found that the use of various algae (fucus, laminaria, chlorella) containing Na-alginate allows obtaining alcohol and water extracts of varying saturation with food and biologically active substances. The most effective method was ultrasonic extraction, allowing saturated extracts of three algae species to be obtained within 30 minutes. The concentration of dry substances in all samples obtained by ultrasonic extraction exceeds that of samples with water extraction. The same dependence is noted in the color intensity of all samples. The CVA method revealed oxidative instability of organic compounds in the studied aqueous extracts.