Sapropel ( SAPROS - rotten, and PELOS - mud, silt) are centuries-old benthic sediments of freshwater pools which were formed from the defunct water flora, living beings remnants, plankton and the soil detritus particles containing lots of organic substances and humus. In other words, sapropel is organic and mineral natural matter composed of organic and mineral raw components of vegetal and animal origin.
Sapropel pertains to the class of fossil coals known under an umbrella term "Sapropelites". Sapropel sediments are characteristic only for freshwater pools. Thus, there are three main components in sapropels: water (60 to 97%), cindery part (sand, clay, carbonites, phosphates, silica, iron compounds etc.) and organic matter of a very complex and varied composition.
Sapropel is a unique gift of nature, as there is no other substance having these properties!
Only sapropel contains such a variety of organic and mineral components: water-soluble, easy -
and hard to hydrolyze substances, hymatomelanic, humic and fulvic acids, a wide spectrum of amino acids, sugars, peptides, cellulose, lignin, lipids, carotenoids, xanthophylls, spirits, ketones, carbonic acids, chlorophyll derivatives, alkaloids, metalloporphyrins, phospholipids, vitamins, enzymes, antibiotics, steroid compounds, extended composition of trace elements in the form of organo-mineral complexes.
Variety of components and their proportions in relic sapropel are balanced naturally and all of them are essential for plants and animals at all stages of development.