UNIGE document Scientific Article
previous document  unige:2906  next document
add to browser collection

A new source for 4-methyl sterols in freshwater sediments : Utricularia neglecta L. (Lentibulariaceae)

Dreier, Francine
Published in Organic Geochemistry. 1992, vol. 18, no. 6, p. 757-763
Abstract Lipid analyses of several aquatic plants growing in a freshwater lake allowed us to show that Utricularia neglecta L. (Lentibulariaceae), a world-wide distributed submerged aquatic plant, is an important potential source for sedimentary 4-methyl sterols in lacustrine environments. This plant contains, besides the 4-desmethyl sterols, high proportions of 4-methyl sterols, 4α-methyl-24-ethyl-5α-cholestan-3β-ol (citrostanol) being predominant. Other 4-methyl sterols include 4α-methyl-5α-cholestan-3β-ol, 4α,24-dimethyl-5α-cholestan-3β-ol, 4α,23,24-trimethyl-5α-cholest-22-en-3β-ol (dinosterol) and 4α,23,24-trimethylcholesta-5,22-dien-3β-ol. Steroidal ketones comprising both 4-desmethyl and 4-methyl components are also present in significant amounts. The similarity of the distribution of the 4-methyl sterols in the surface sediment with those in U. neglecta L. suggests that this plant is an important source for sedimentary 4-methyl sterols.
Keywords Sterols4-methyl sterolsCitrostanolUtricularia neglecta L.Utricularia australisLentibulariaceaeLacustrine sediments
Full text
This document has no fulltext available yet, but you can contact its author by using the form below.
Research group Groupe Gülaçar
(ISO format)
KLINK, Georges et al. A new source for 4-methyl sterols in freshwater sediments : Utricularia neglecta L. (Lentibulariaceae). In: Organic Geochemistry, 1992, vol. 18, n° 6, p. 757-763. https://archive-ouverte.unige.ch/unige:2906

232 hits

0 download


Deposited on : 2009-09-21

Export document
Format :
Citation style :