| abstract |
A process for the production of lipids from biomass including at least one polysaccharide comprising: subjecting said biomass to acid hydrolysis in the presence of an aqueous solution of at least one organic acid selected from alkyl- or aryl-sulfonic acids having from C 7 to C 20 carbon atoms, preferably from C 9 to C 15 carbon atoms, or from halogenated carboxylic acids, at a temperature ranging from 80°C to 160°C, preferably from 100°C to 150°C, obtaining a first mixture comprising a first solid phase and a first aqueous phase; - subjecting said first mixture to enzymatic hydrolysis obtaining a second mixture comprising a second solid phase and a second aqueous phase; subjecting said second aqueous phase to fermentation in the presence of at least one oleaginous yeast obtaining an oleaginous cellular biomass comprising lipids. The lipids thus obtained can be advantageously used in the production of biodiesel or green diesel which can be used as such, or in a mixture with other fuels for motor vehicles. |