Yeast fermentation of carboxylic acids obtained from pyrolytic aqueous phases for lipid production

► A fractional condenser was used to separate pyrolytic aqueous phase and bio-oil. ► Model compounds representing C1-C4 pyrolytic molecules were fermented. ► The optimal acetate concentration for fermentation with C. curvatus was determined. ► A technology to produce lipid from the pyrolytic aqueous phase was proposed.