TECHNOLOGY FOCUS - BIOTECHNOLOGY - Preferred Microorganism: The oleaginous organism is oleaginous alga, oleaginous yeast and oleaginous fungus, preferably oleaginous alga. The alga is chosen from Bacillariophyceae strains, Chlorophyceae, Cyanophyceae, Xanthophyceae, Chrysophyceae, Chlorella, Crypthecodinium, Schizochytrium, Nannochloropsis, Ulkenia, Cyclotella, Navicula, Nitzschia, Cyclotella, Phaeodactylum, and Thaustochytrids. The yeast is chosen from Rhodotorula, Saccharomyces, and Apiotrichum strains. The fungus includes Mortierella strain. The solvent is chosen from 4-16C (preferably 10-16C) hydrocarbons. The oleaginous organism is genetically engineered to enhance lipid production. Preferred Method: The method (M1) further involves distilling the solvent-oil fraction to obtain usable oil. The method further involves distilling the solvent-oil fraction to obtain usable oil and recovered solvent, and recycling at least a portion of the recovered solvent for use in the mixing step. The oleaginous organism undergoes at least two separate cycles of mixing and recycling. The oleaginous organism is concentrated before the mixing step. The method further involves performing sonication during at least a portion of the mixing step, where the sonication is performed at a frequency of 20 kHz to 1 MHz, preferably 40 kHz. The mixing step is facilitated with at least one of sonication and mechanical mixing. The method (M2) further involves providing a wavelength-shifting dye, where the dye adapted to increase the quantity of usable photons available to the photosynthetic alga in the culture system, where the wavelength-shifting dye is incorporated into particles or a film. The method (M2) further involves providing a Fresnel lens adapted to increase the quantity of photons available to the photosynthetic alga when a light source is received at oblique angles, where the wavelength-shifting dye is incorporated into Fresnel lens. The method (M2) further involves distilling the solvent-oil fraction to obtain usable oil, where the method is continuous. EXAMPLE - No suitable example given.