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The extraction of sapropels of organic type (Kachkulnya Lake) and organo-mineral type (Barchin Lake) from Novosibirsk region by ethanol at a variation of process temperature was studied. It was shown that the rising of the temperature from 50 °C to 200 °C results in an increase the yields of extracts by 19,0 and 13,7 times for sapropels organic and organo-mineral - types respectively The composition of obtained extracts was established by IR and GC – MC methods. Products from sapropel organic type contained 68,1 % ethyl esters , mainly of fatty acids with carbon atoms in the molecule are from 18 to 29 numbers. It was established that relative content of ethyl esters in extract of organo-mineral type sapropel was 43,6 %, they have a significant amounts of ethyl esters of hydroxy - and oxyacids. A distinctive feature of the ethanol extract from organo-mineral type sapropel is the presence of carbohydrates and compounds containing a furan ring.

The Study of Ethanol Extracts Composition of Organic (Kachkulnya Lake) and Organomineral (Barchin Lake) Sapropels from Novosibirsk Region