Mycelium fatty acids

Both the spores and the mycelium seem capable of producing methyl ketones from fatty acids (12, 13). Furthermore, both short chain and long chain fatty acids are metabolized, thereby giving rise to an homologous series of methyl ketones, the main ones being 2-pentanone, 2-heptanone and 2-nonanone (14). A number of processes have been developed and patented for producing blue cheese flavor via the fermentation of milk fat (15, 16). Usually the... 

Lawrence R.C. and Hawke J.C. (1968) The oxidation of fatty acids by mycelium of Penicillium roque-fortii. J. Gen. Microbiol., 57, 289-302. 

A number of factors affect the rate of methyl ketone production, including temperature, pH, physiological state of the mould, and the ratio of the concentration of fatty acid to the dry weight of spores (Adda et ai, 1982). Fan et al. (1976) found that both resting spores and fungal mycelium are capable of producing methyl ketones. The rate of production of methyl ketones does not depend directly on the concentrations of FFA precursors indeed high concentrations of FFAs are toxic to P. roqueforti. 

Table XII. Fatty Acid Composition (% of Total Fatty Acids) of Cirrenalia pygmea (Deuteromycotina, Dematiaceae) Mycelium Grown on Malt Agar Medium with Sea Water or NaCI 159 ...

A related study documented greater amounts of unsaturated fatty acids In spores and mycelium of several species of thermophilic and thermotolerant mucoralean fungi when grown at 25 C rather than 48 C (74). These authors suggested that perhaps low dissolved oxygen in growth media at high temperatures would support only reduced levels... 

When nystatin was added to the growing mycelium in the intensive growing phase, the effect of the antibiotic on the lipid metabolism can better be seen. Sensitivity is followed by the relative decrease of linoleic and stearic acids and the relative increase of palmitic and linolenic acids. These changes and the Increased anrx)unt of the shorter fatty acids suggest that the Inhibition in the fatty acid biosynthesis is responsible for the sensitivity of the nrK)uids to saponin or polyene antibiotics. 

Grown on potato and carrot media total yield of lipids from mycelium 100-fold total lipid content of media. Some SUntphylium epp. are imperfect states of Pleospora (Ainsworth and Biebey, 1961). fatty acid. 

Grown on potato and carrot medium but fatty acids in mycelium exceeded those in medium. 

Besides these studies of fatty acids from the vegetative mycelium. 

Talbot and Vining (1963) peeled off the red pigmented surfaces of the fruiting bodies of Amanita muscaria, and analyzed the fatty acids of the polar and neutral hpid fractions extracted from this tissue. As Table V shows, the figures for these two fractions are strikingly similar to those of Bentley et al. for the whole fruiting bodies of the related Clitocybe illudens, and are also similar to those for the mycelium of Tricholoma nudum. 

It is interesting to note that the fatty acid composition of a Basidio-mycete stipe is intermediate between that of the attached pileus and that typical of Basidiomycete mycelium (Shaw, 1966) suggesting that there is a gradation in the ratio of the two lipid fractions, from the... 

The fatty acid composition of P. chartarum spores was essentially similar to that of the mycelium (Hartman et al., 1960). 

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