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Effects of different culture media and oxygen upon lipids of Escherichia coli K‐12
Author(s) -
Naccarato William F.,
Gilbertson John R.,
Gelman Rose A.
Publication year - 1974
Publication title -
lipids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.601
H-Index - 120
eISSN - 1558-9307
pISSN - 0024-4201
DOI - 10.1007/bf02533108
Subject(s) - anaerobic exercise , biochemistry , chemistry , fatty alcohol , oxygen , clinical chemistry , metabolism , biosynthesis , fatty acid , lipid metabolism , lipidology , hydrocarbon , escherichia coli , fatty acid methyl ester , food science , organic chemistry , biology , catalysis , enzyme , physiology , gene , biodiesel
The effects of altering the chemical composition of the culture media and the oxygen content of the environment upon the lipid metabolism of Escherichia coli K‐12 were investigated. When E. coli cells were grown on the same culture medium but under aerobic and anaerobic conditions, an increase in the free fatty acids of anaerobically grown cells was observed with a disproportionate increase in the unsaturated fatty acids. When glucose was the sole carbon source, both fatty alcohols and hydrocarbons were detected as component lipids of these cells, whether growth occurred under aerobic or anaerobic conditions. Based upon this observation, acetate is considered the initial precursor for fatty alcohol and hydrocarbon biosynthesis. A possible metabolic pathway involving fatty alcohols in hydrocarbon synthesis has been postulated.