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Lipids of Rhizopus arrhizus Fischer.

Authors :
Weete JD
Weber DJ
Laseter JL
Source :
Journal of bacteriology [J Bacteriol] 1970 Sep; Vol. 103 (3), pp. 536-40.
Publication Year :
1970

Abstract

The lipids of Rhizopus arrhizus Fischer mycelia and sporangiospores were extracted, isolated, and separated by thin-layer, liquid, and gas chromatography. Structural confirmations of the compounds were made by a gas chromatographmass spectrometer combination. The n-heptane fraction contained squalene (1%) as a major hydrocarbon constituent. Other major lipid classes detected were free fatty acids, naturally occurring methyl esters of fatty acids, triglycerides, sterols, and polar lipids. The polar lipids (44.4%) were found in the highest concentrations, and the triglycerides (22.1%), sterols (16.7%), and free fatty acids (11.7%) were present in lesser concentrations. This is the first report of naturally occuring methyl esters of long-chain fatty acids being present in fungal mycelium. There appears to be a preference for incorporation of unsaturated acids into the complex lipids, with the exception of the triglycerides. The major saturated fatty acids in the mycelium were palmitic (C(16)) and arachidic (C(20)), whereas the major unsaturated acids were oleic (C(18:1)) and linoleic (C(18:2)), respectively.

Details

Language :
English
ISSN :
0021-9193
Volume :
103
Issue :
3
Database :
MEDLINE
Journal :
Journal of bacteriology
Publication Type :
Academic Journal
Accession number :
5474875
Full Text :
https://doi.org/10.1128/jb.103.3.536-540.1970