Continuous cultivation of Geotricum candidum grown on orange peel extracts produced a high-protein, low-lipid content single cell protein which could be utilized as feed or proteic extract source. The lipid content, ca 4%, was very low compared with the data available in the literature, a result which might be attributed to the fermentation conditions employed in this study. The lipid composition of the dried biomass of this fungus is reported and briefly discussed.