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Effects of various carbon and nitrogen sources on fungal lipid production
Author(s) -
Farag R. S.,
Khalil F. A.,
Salem H.,
Ali L. H. M.
Publication year - 1983
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02787430
Subject(s) - hydrolysate , fructose , food science , incubation , glycerol , sugar , urea , chemistry , nitrogen , fatty acid , carbon fibers , mycelium , composition (language) , incubation period , biochemistry , biology , botany , hydrolysis , organic chemistry , philosophy , composite number , composite material , materials science , linguistics
The efficiency of lipid production by Tolyposporium ehrenbergii and Spacelotheca reiliana (family Ustilaginaceae) cultivated on a fat‐free medium was evaluated. The fungi were artificially cultured on media containing various monoor disaccharides and urea or peptone as basic sources for carbon and nitrogen, respectively. Some natural and industrial byproducts (glycerol, glucose syrup, potato hydrolysate and molasses hydrolysate) were also used as principal carbon sources for fungal growth. Media containing fructose/peptone or glucose/peptone were the most efficient for fungal fat production during one week of incubation. After a two‐week incubation period, highest phospholipid concentrations were found in S. reiliana and T. ehrenbergii mycelia obtained from media containing molasses hydrolysate/peptone and glycerol/urea, respectively. Fatty acid analysis of the fungal growth indicated the presence of a wide range of fatty acids, i.e., odd‐and even‐carbon numbered acids, both saturated and unsaturated. The results demon‐strated that the variability in the fatty acid composition largely depends on the type of sugar and nitrogen sources and the age of the culture.