The Lipid accumulation of two oleaginous diatom species
两株硅藻筒柱藻和纤细角毛藻的油脂生产

The biomass, total lipids and Triacylglycerol contents of Cylindrotheca fusiformis and Chaetoceros gracilis were measured in batch, with bubble column photobioreactor. The results showed that the biomass and total lipid productivity were similar. The fatty acids composition of lipid from them were mainly C16:0 and C16:1. The composition of extracted lipid from C. fusiformis was mainly TAG, while in C. gracilis was mainly monoacylglycerol, phospholipids and glycolipids. Decreased the salinity of medium, the biomass, lipid prodcutivity, and TAG productivity were higher than which N or Si was limited. In these studies, TAG productivity can reach 0.36g/(L·d), more than half of dry biomass. C. fusiformis has good potential capacity to be the microalgae species for microalgae biofuel production.