“…This biomass of alkane-grown cells contains further about 25-30% total carbohydrates (polysaccharides as 8-10% high molecular mannan, 3-4% low molecular mannan, 11-15% glucan, mainly localized in the cell walls, 1.5-2% glucogen, and 0.7% trehalose), 6-7% total nucleic acids and 15-18% lipids. In contrast, in glucose-grown cells, the total carbohydrate content is significantly higher (43-46%, including 11 % mannan, 12-13% glucan, 3% trehalose, and 4-6% glucogen), whereas the lipid content (13-14%) and the protein content (35-37%) are lower, without changed nucleic acid content (Bruckner and Troger 1981b;Blasig et al 1984Blasig et al , 1989.…”