Article (Scientific journals)
Regulation of the pigment optical density of an algal cell: filling the gap between photosynthetic productivity in the laboratory and in mass culture
Formighieri, Cinzia; Franck, Fabrice; Bassi, Roberto
2012In Journal of Biotechnology, 162, p. 115-123
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Keywords :
algae; biofuels; antenna size
Abstract :
[en] An increasing number of investors is looking at algae as a viable source of biofuels, beside Q3 cultivation for human/animal feeding or to extract high-value chemicals and pharmaceuticals. However, present biomass productivities are far below theoretical estimations implying that a large part of the available photosynthetically active radiation is not used in photosynthesis. Light utilisation inefficiency and rapid light attenuation within a mass culture due to high pigment optical density of wild type strains have been proposed as major limiting factors reducing solar-to-biomass conversion efficiency. Analysis of growth yields of mutants with reduced light-harvesting antennae and/or reduced overall pigment concentration per cell, generated by either mutagenesis or genetic engineering, could help understanding limiting factors for biomass accumulation in photobioreactor. Meanwhile, studies on photo-acclimation can provide additional information on the average status of algal cells in a photobioreactor to be used in modellingbased predictions. Identifying limiting factors in solar-to-biomass conversion efficiency is the first step for planning strategies of genetic improvement and domestication of algae to finally fill the gap between theoretical and industrial photosynthetic productivity.
Disciplines :
Biotechnology
Author, co-author :
Formighieri, Cinzia ;  University of Verona
Franck, Fabrice  ;  Université de Liège - ULiège > Labo de Bioénergétique
Bassi, Roberto;  University of Verona
 These authors have contributed equally to this work.
Language :
English
Title :
Regulation of the pigment optical density of an algal cell: filling the gap between photosynthetic productivity in the laboratory and in mass culture
Publication date :
2012
Journal title :
Journal of Biotechnology
ISSN :
0168-1656
eISSN :
1873-4863
Publisher :
Elsevier
Volume :
162
Pages :
115-123
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
Sunbiopath
Funders :
EU - European Union [BE]
Available on ORBi :
since 20 March 2012

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