The researchers studied how different growth conditions and organic carbon sources affect the production of biomass and biodiesel quality in a type of microalgae called Choricystis minor var. minor. They found that using glucose led to the highest biomass production, while fructose was best for biodiesel quality. Heterotrophic and mixotrophic growth conditions were more effective than photoautotrophic ones. Heterotrophic cultures had lower biodiesel quality but higher unsaturated fatty acids. Adding CO2 was not very efficient in converting carbon into biomass. Overall, mixotrophic growth with fructose was the most promising for biodiesel production.