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The growth, lipid and hydrocarbon production of Botryococcus braunii with attached cultivation.

Abstract
The green alga Botryococcus braunii is regarded as a potential source of renewable fuel due to its high lipid and hydrocarbon contents. However, the slow growth rate damaged its feasibility for biofuel production. In this study, a novel method of 'attached cultivation' was introduced to incubate B. braunii FACHB 357 (B race). A high biomass productivity of 6.5 gm(-2)d(-1) was achieved in single layer attached system at early stage of cultivation. At day 10, the biomass, lipid and hydrocarbon productivities were 5.5, 2.34 and 1.06 gm(-2)d(-1), respectively. Under nitrogen starvation condition, both of the contents of lipid and hydrocarbon were increased, whereas the profile of hydrocarbon kept almost unchanged, while the content for oleic acid (18:1) increased and linolenic acid (18:3) decreased. With a multi-layer photobioreactor, a biomass productivity of 49.1 gm(-2)d(-1) or a photosynthetic efficiency of 14.9% (visible light) were obtained under continuous illumination of 500 μmolm(-2)s(-1).
AuthorsPengfei Cheng, Bei Ji, Lili Gao, Wei Zhang, Junfeng Wang, Tianzhong Liu
JournalBioresource technology (Bioresour Technol) Vol. 138 Pg. 95-100 (Jun 2013) ISSN: 1873-2976 [Electronic] England
PMID23612166 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
CopyrightCopyright © 2013 Elsevier Ltd. All rights reserved.
Chemical References
  • Fatty Acids
  • Hydrocarbons
  • Lipids
  • Nitrogen
Topics
  • Biomass
  • Cell Culture Techniques (instrumentation, methods)
  • Chlorophyta (drug effects, growth & development, metabolism, radiation effects)
  • Fatty Acids (metabolism)
  • Hydrocarbons (metabolism)
  • Light
  • Lipids (biosynthesis)
  • Nitrogen (pharmacology)
  • Photobioreactors

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