ОСОБЕННОСТИ ОПРЕДЕЛЕНИЯ ДИСПЕРСНОСТИ ИЗВЛЕЧЕНИЙ И МИКРОЭЛЕМЕНТОГО СОСТАВА В РАСТИТЕЛЬНОМ СЫРЬЕ ДЕРЕЗЫ ОБЫКНОВЕННОЙ

Abstract

Abstract. This paper presents the original study results of the fruits elemental composition and the infusions dispersed characteristics of Lycium barbarum L. in order to develop approaches to the standardization of promising plant materials. The Lycium belongs to the flowering division, class – dicotyledonous, family – Solanaceae (Solanaceae), tribe – Lycieae. The Lycium fruits – red oblong-ovate berries, 8-18 mm. To determine the weight loss from drying (11.5%), the fruits were dried for 4 hours at 60 °C in a BINDER FD oven. The dried fruits were analyzed by X-ray (XFA) for the content of chemical elements. The elements K, Cl, P, Ca, S, Fe, Cu, Zn, Br were found, with the K high values content (C,%). The fruits were also used to prepare water extracts, the holding time of which in a boiling water bath was 15, 30, 60 and 90 minutes. Dispersed characteristics (hydrodynamic radius d, nm, zeta potential ξ, mV, dimensional spectra of sub- and supramicron particles) in extracts were studied by DLS and LALLS methods. To remove the microns range particles from extracts there were used an inert membrane filter (Millex GV, d of pores = 0.22 m). The average particle size varies from 254 nm to 557 nm depending on the time of infusion and filtration. The 15 minutes infusion showed the smallest average particle size, the 90 minutes infusion - the largest ones. The infusion sizes decrease by about 2 times when passing through Millex filter. All infusions have a polydispersity index (PDI) value of less than 0.6 and are characterized by colloidal stability (zeta potential from -23 to -27 mV). The LALLS method demonstrated the presence of 50 m particles, the content of which decreases after passing through 0.22 m system. The proposed methods of analysis make it possible to standardize promising plant raw materials for pharmaceutical use.