THE LIPID CHEMICAL COMPOSITION OF LEAFY MOSSES – PEAT-FORMING PLANTS OF EUTROPHIC SWAMPS OF WESTERN SIBERIA AND ALTAI
Abstract
The paper describes the molecular composition of lipids in three samples of leafy moss (Aulacomnium palustre, Warnstorfia fluitans and Calliergon giganteum). Acyclic compounds such as normal and isoprenoid alkanes, isoprenoid alkenes, carboxylic acids and their esters, alcohols, aldehydes, normal and isoprenoid ketones were identified. Cyclic structures comprised of bi-, tri- and tetracyclic polycycloaromatic hydrocarbons (PAHs), bicyclic and pentacyclic terpenoids, steroids and tocopherols were detected. It was shown that carboxylic acids and n-alkanes with the dominance of C27 homologue prevail among the organic compounds identified in mosses. It was found that A. palustre is characterized by a reduced content of isoprenoid compounds, alcohols, ketones and high content of unsaturated acids, pentacyclic terpenoids and aldehydes. A. palustre also differs from W. fluitans and C. giganteum in the composition of steroids. The sesquiterpenoid eremophilene was detected in A. palustre, but it is absent in the other mosses. The content of lycopadiene, carboxylic acids, n-alkanes, fit-2-ene, aldehydes, esters, squalene, diploptene, α-tocopherol and triphenyl phosphates is higher in W. fluitans in comparison to C. giganteum.
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