| abstract |
The invention relates to a process for the separation of undesirable constituents from undried biomass, which is produced by culturing microorganisms on hydrocarbon-containing substrates and treating the fermentation broth by means of mechanical separation processes. The aim of the invention is a product-sparing, cost-effective and technologically less complicated process for obtaining a veterinary medical requirements appropriate biomass. The undesirable components such as hydrocarbons, fatty acids and glycerol esters are removed by contacting the undried biomass with a water content of 55 to 95% by weight under supercritical conditions with carbon dioxide at temperatures up to 453.15K and pressures up to 40.53MPa. |