[Synthesis of total lipids and waxes by Candida tropicalis with various concentrations of the carbon source].

The object of this work was to study the ability of Candida yeasts to accumulate biomass, lipids and wax in the course of their cultivation in a medium containing different concentrations of n-hexadecane. Its optimal concentration for the above processes was 1 to 2%. At a higher concentration (4 and 8%), the yield of wax and fat decreased, mainly due to inhibition of the culture growth.

[Effect of salt supplements on lipid growth and synthesis by yeast cultivated on peat oxidates].

The accumulation of biomass and lipids and their fatty acid composition were investigated during cultivation of the yeast Candida tropicalis and Lipomyces lipoferus on peat oxidates supplemented with inorganic compounds containing nitrogen, phosphorus, potassium and magnesium. The absence of additional sources of the above elements from the nutrient substrate inhibited the culture growth. In order to optimize cultivation of lipid synthesizing yeast on peat oxidates, the above compounds should be added in certain concentrations.