Enhancement of Biomass and Lipid Productivities of Water Surface-Floating Microalgae by Chemical MutagenesisReportar como inadecuado


Enhancement of Biomass and Lipid Productivities of Water Surface-Floating Microalgae by Chemical Mutagenesis


Enhancement of Biomass and Lipid Productivities of Water Surface-Floating Microalgae by Chemical Mutagenesis - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Division of Biotechnology and Life Science, Institute of Engineering, Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Koganei, Tokyo 184-8588, Japan





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Academic Editors: Paul Long, Allen Place, Rosemary Jagus, Joy Watts and Peer B. Jacobson

Abstract Water surface-floating microalgae have great potential for biofuel applications due to the ease of the harvesting process, which is one of the most problematic steps in conventional microalgal biofuel production. We have collected promising water surface-floating microalgae and characterized their capacity for biomass and lipid production. In this study, we performed chemical mutagenesis of two water surface-floating microalgae to elevate productivity. Floating microalgal strains AVFF007 and FFG039 tentatively identified as Botryosphaerella sp. and Chlorococcum sp., respectively were exposed to ethyl methane sulfonate EMS or 1-methyl-3-nitro-1-nitrosoguanidine MNNG, and pale green mutants PMs were obtained. The most promising FFG039 PM formed robust biofilms on the surface of the culture medium, similar to those formed by wild type strains, and it exhibited 1.7-fold and 1.9-fold higher biomass and lipid productivities than those of the wild type. This study indicates that the chemical mutation strategy improves the lipid productivity of water surface-floating microalgae without inhibiting biofilm formation and floating ability. View Full-Text

Keywords: chemical mutagenesis; microalgae; biofuels; lipid production; water surface-floating chemical mutagenesis; microalgae; biofuels; lipid production; water surface-floating





Autor: Daisuke Nojima, Yuki Ishizuka, Masaki Muto, Asuka Ujiro, Fumito Kodama, Tomoko Yoshino, Yoshiaki Maeda, Tadashi Matsunaga and Tsuyoshi Tanaka *

Fuente: http://mdpi.com/



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