PROCESS FOR THE PRODUCTION OF LIPIDS FROM BIOMASS EMPLOYING OLEAGINOUS YEAST

摘要

Process for the production of lipids from biomass including at least one polysaccharide comprising: - subjecting said biomass to hydrolysis to obtain a mixture comprising a first solid phase and a first aqueous phase; - preparing an inoculum comprising at least one oleaginous microorganism in a first fermentation device to obtain a first fermentation broth; - feeding said first aqueous phase and said first fermentation broth to a second fermentation device to obtain a second fermentation broth; - subjecting at least a portion of said second fermentation broth to microfiltration to obtain a first retentate and a first permeate; - feeding said first retentate to said second fermentation device; - subjecting said first permeate to a purification treatment to obtain a second permeate and a second retentate; - feeding said second retentate to said second fermentation device; - at the end of said fermentation, subjecting said second fermentation broth to separation to obtain an aqueous suspension of oleaginous cellular biomass comprising lipids and a second aqueous phase. The lipids thus obtained can advantageously be used in the production of biofuels.