RESEARCH INTO PROPERTIES AND STRUCTURE OF BASIC POLYSACCHARIDE IN PRUNUS DOMESTICA (CHERRY)
The paper deals with FTIR and 13C NMR spectroscopic, thermo-gravimetric, radioactive and viscosimetric analyses of the diluted gum water solution. It revealed that there are galactan and arabinan in the basic residue of cherry gum extract in the environs of Shamakhi city (Azerbaijan) with 14% moisture mineral salts of 2-3%. Most of them include e Na+, Mg2+, Ca2+, K+, Zn2+ Fe3+ ions. In the meanwhile Cu2+, Mg2+, Cd2+ ions make up 0.001% of total mass. Following FTIR and C NMR analyses, there are mainly -OH, -COOH, -O- functional groups with molecular mass for arabinogalactan fraction of 130 kDa. At the same time, the quantity and activity of radioactive elements such as 137Cs, 226Ra, 228Ra, 40K, 235U, 238U in the content of cherry gum have been established by γ-spectrometer method. It demonstrated that isotopes dominate in 238U and 40K and their activity are respectively 1.31±0.243 and 04±0.16 Bk/gr. The content of these radioactive isotopes in the gum makes it possible to produce arabinogalactan-based sorbents.