NDLI: Enhancing lipid productivity of Chlorella vulgaris using oxidative stress by TiO$

Content Provider	Springer Nature Link
Author	Kang, Nam Kyu Lee, Bongsoo Choi, Gang Guk Moon, Myounghoon Park, Min S. Lim, JitKang Yang, Ji Won
Copyright Year	2014
Abstract	Ability to increase the lipid production in microalgae is one of the heavily sought-after ideas to improve the economic feasibility of microalgae-derived transportation fuels for commercial applications. We used the oxidative stress by TiO$_{2}$ nanoparticles, a well-known photocatalyst, to induce lipid production in microalgae. Chlorella vulgaris UTEX 265 was cultivated under various concentrations of TiO$_{2}$ ranging from 0.1 to 5 g/L under UV-A illumination. Maximum specific growth rate was affected in responding to TiO$_{2}$ concentrations. In the presence of UV-A, chlorophyll concentration was decreased at the highest concentration of TiO$_{2}$ (5 g/L TiO$_{2}$) by oxidative stress. The fatty acid ethyl ester (FAME) composition analysis suggested that oxidative stress causes the accumulation and decomposition of lipids. The highest FAME productivity was 18.2 g/L/d under low concentrations of TiO$_{2}$ (0.1 g/L) and a short induction time (two days). The controlled condition of TiO$_{2}$/UV-A inducing oxidative stress (0.1 g/L TiO$_{2}$ and two days induction) could be used to increase the lipid productivity of C. vulgaris UTEX 265. Our results show the possibility of modulating the lipid induction process through oxidative stress with TiO$_{2}$/UV-A.
Starting Page	861
Ending Page	867
Page Count	7
File Format	PDF
ISSN	02561115
Journal	Korean Journal of Chemical Engineering
Volume Number	31
Issue Number	5
e-ISSN	19757220
Language	English
Publisher	Springer US
Publisher Date	2014-02-08
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	TiO$_{2}$ Nanoparticles Oxidative Stress Chlorella vulgaris Fatty Acid Methyl Ester Industrial Chemistry/Chemical Engineering Catalysis Materials Science Biotechnology
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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