ПЕРВИЧНЫЕ И ВТОРИЧНЫЕ МЕТАБОЛИТЫ LASALLIA PENSYLVANICA

Gyrophoric acid was isolated from thalluses of Lasallia pensylvanica and identification using IR, UV, MS spectrometry and differential scanning calorimetry. It was established that the content of gyrophoric acid in the lichen was 36 mg/g. It was shown that the gyrophoric acid exhibited antioxidant activity relative to the superoxide anion, NO, DPPH and ABTS radicals, inhibited the lipid peroxidation and reduced Fe (II) ions. At the same time, the antiradical activity of the gyrophoric acid relative to the superoxide anion and nitric oxide was higher by 1.3 and 1.6 times, respectively, compared with taxifolin. Neutral lipids, glycolipids, phospholipids and a fraction of water-soluble polysaccharides were isolated from the thalluses of Lasallia pensylvanica. It was shown that the main lipid fractions are neutral and phospholipids, the content of which were 84.25 and 73.25 mg/g, respectively. The yield of the fraction of water-soluble polysaccharides from the thalluses of Lasallia pensylvanica was 45.98%. It is established that the main monomers of the water-soluble fraction of the polysaccharide Lasallia pensylvanica are glucose and mannose. The study of the composition and content of low molecular weight compounds in the thalluses of Lasallia pensylvanica, performing the function of cryo- and osmoprotectants. Found compounds such as hydroxyproline, glutamine, arabitol, ribitol, mannitol, sucrose, trehalose.