Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan, Hubei, China.
School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, Hubei, China.
PLoS One. 2017 Oct 18;12(10):e0186434. doi: 10.1371/journal.pone.0186434. eCollection 2017.
The effects of growth phase on the lipid content and surface properties of oleaginous microalgae Botryococcus sp. FACGB-762, Chlorella sp. XJ-445 and Desmodesmus bijugatus XJ-231 were investigated in this study. The results showed that throughout the growth phases, the lipid content of microalgae increased. The surface properties like particle size, the degree of hydrophobicity, and the total concentration of functional groups increased while net surface zeta potential decreased. The results suggested that the growth stage had significant influence not only on the lipid content but also on the surface characteristics. Moreover, the lipid content was significantly positively related to the concentration of hydroxyl functional groups in spite of algal strains or growth phases. These results provided a basis for further studies on the refinery process using oleaginous microalgae for biofuel production.
本研究考察了生长阶段对油脂微藻 Botryococcus sp. FACGB-762、Chlorella sp. XJ-445 和 Desmodesmus bijugatus XJ-231 的脂质含量和表面特性的影响。结果表明，在整个生长阶段，微藻的脂质含量增加。表面特性如粒径、疏水性程度和总官能团浓度增加，而净表面 ζ 电位降低。结果表明，生长阶段不仅对脂质含量而且对表面特性都有显著影响。此外，脂质含量与羟基官能团的浓度呈显著正相关，而与藻株或生长阶段无关。这些结果为进一步研究利用油脂微藻进行生物燃料生产的精炼工艺提供了依据。
