Culture-Independent Phylogenetic Analysis of the Microbial Community in Industrial Sugarcane Bagasse Feedstock Piles
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概要
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Sugarcane bagasse is an important lignocellulosic by-product with potential for conversion to biofuels and chemicals in biorefinery. As a step towards an understanding of microbial diversity and the processes existing in bagasse collection sites, the microbial community in industrial bagasse feedstock piles was investigated. Molecular biodiversity analysis of 16S rDNA sequences revealed the presence of a complex bacterial community. A diverse group of mainly aerobic and facultative anaerobic bacteria was identified reflecting the aerobic and high temperature microenvironmental conditions under the pile surface. The major bacterial taxa present were identified as Firmicutes, Alpha- and Gammaproteobacteria, Acidobacteria, Bacteroidetes, and Actinobacteria. Analysis of the eukaryotic microbial assemblage based on an internal transcribed spacer revealed the predominance of diverse cellulolytic and hemicellulolytic ascomycota. A microbial interaction model is proposed, focusing on lignocellulose degradation and methane metabolism. The insights into the microbial community in this study provide a basis for efficient utilization of bagasse in lignocellulosic biomass-based industries.
著者
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Champreda Verawat
Enzyme Technology Laboratory, Bioresources Technology Unit, National Center for Genetic Engineering
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Eurwilaichitr Lily
Enzyme Technology Laboratory, Bioresources Technology Unit, National Center for Genetic Engineering
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IGARASHI Yasuo
Department of Biotechnology, The University of Tokyo
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RATTANACHOMSRI Ukrit
Enzyme Technology Laboratory, National Center for Genetic Engineering and Biotechnology
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KANOKRATANA Pattanop
Enzyme Technology Laboratory, National Center for Genetic Engineering and Biotechnology
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