The Effects of Trace Elements on the Lipid Productivity and Fatty Acid Composition ofNannochloropis oculata

Xiao Dou, Xiang-Hong Lu, Mei-Zhen Lu, Li-Sheng Yu, Rong Xue, Jian-Bing Ji
2013 Journal of Renewable Energy  
The effects of trace elements on the lipid productivity and fatty acid composition ofNannochloropis oculata (N. oculata)were studied. The results showed that trace elements had a strong influence on not only the lipid productivity but also the fatty acid composition. The addition of Fe3+, Zn2+, Mn2+, Mo6+, and EDTA and the deletion of Cu2+and Co2+can increase the lipid productivity. The optimum concentrations of the trace elements in the culture medium are 6 times of Fe3+and EDTA, the same
more » ... EDTA, the same concentration of Zn2+, Mn2+, and Mo6+as the control group, but the optimum medium has no Cu2+or Co2+. Fe3+, Zn2+, Mn2+, Mo6+, and EDTA are indispensable during the EPA formation ofN. oculata. The addition of Fe3+, Zn2+, Mn2+, Mo6+, and EDTA can strongly increase the content of EPA in the lipid ofN. oculata, but the concentration of the trace elements had little influence on the level of EPA.
doi:10.1155/2013/671545 fatcat:y7ozhwm2qfdehi65upmyh2apky