| abstract |
The invention relates to a process for the growth of yeasts on hydrocarbons, in particular for the production of protein-rich low-hydrocarbon yeast cells. Increasing the quality of the feed yeast by lowering the content of hydrocarbons less than 10%, of lipids less than 10% and of carbohydrates less than 20% already in the raw biomass is achieved by adding 2 separate nutrient solutions to the fermentation, the first nutrient solution being 5-10%. The second saline solution contains 5-15% sulfuric acid, the sulfur supply of which contains 4.0-5.5 g sulfur per kg dry yeast. A sulphate level of 40-120 mg per liter of fermentation fluid is set. |