Investigation of the Composition of n-Heptane and Ethanol-Benzene Extracts of Brown Coal for the Isolation of Biologically Active Substances
K. M. SHPAKODRAEV1, S. I. ZHEREBTSOV1, Z. R. ISMAGILOV1,2
1Federal Research Center of Coal and Coal Chemistry, Siberian Branch of the Russian Academy of Sciences, Kemerovo, Russia
2Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
Keywords: буроугольный битум, биологически активные вещества, компонентный состав, bitumen of brown coal, biologically active substances, component composition
Pages: 685-691
Abstract
The group and component composition of n-heptane and alcohol-benzene extracts of bitumen obtained from the brown coal of the Tyulgan deposit were investigated. Application of 13С NMR spectroscopy (CPMAS) and IR Fourier spectroscopy, gas chromatography-mass spectrometry, liquid chromatography allowed us to determine that n-heptane and alcohol-benzene extracts are represented by similar groups of substances: alcohols, phenols, alkanes, small amounts of carboxylic acids and aromatic compounds, esters, unsaturated hydrocarbons. The substances of these groups are distributed in these extracts to different extents, with the prevalence of compounds of aliphatic nature. A number of biologically active susbtances were identified in the extracts: tetra-, hexa-, octadecanouc acids, butylparabene, ferruginol, eicosane.
DOI: 10.15372/CSD2019191
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