Accession Number : AD0781416

Title :   Effects of Oxygen Levels on the Fatty Acids and Lipids of Mucor rouxii,

Corporate Author : NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) DIV OF BIOLOGICAL SCIENCES

Personal Author(s) : Safe,S. ; Duncan,J.

Report Date : 07 DEC 1973

Pagination or Media Count : 5

Abstract : The effect of aerobic and oxygen limiting (anaerobic) growth conditions upon the fatty acid and lipid composition of Mucor rouxii has been examined. The aerobic cells contained a range of fatty acids typical of phycomycetes, i.e. gamma-linolenic acid, with an unsaturation index of 1.20, whereas the anerobic cells contained relatively high levels of shorter chained fatty acids and very low concentrations of unsaturated acids (unsaturation index = 0.025). The unsaturated compounds were monoolefinic tetra-, hexa-, and octadecenoic acids. These results were consistent with a microaerobic biosynthetic pathway. In addition, there were major quantitative differences in the lipid composition of the two types of cells; and it was evident that the differences in growth environment markedly affected the cellular lipid and fatty acid compositions. (Modified author abstract)

Descriptors :   *Molds(Organisms), *Fungi, *Fatty acids, *Lipids, Plectomycetes, Growth(Physiology), Anaerobic processes, Aerobic processes, Oxygen, Metabolism

Subject Categories : Biochemistry
      Microbiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE