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Influence of substrate loadings on the consolidated bioprocessing of rice straw and sugarcane bagasse biomass using Ruminiclostridium thermocellum
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posted on 2019-01-01, 00:00 authored by Nisha Singh, A S Mathur, Colin BarrowColin Barrow, D K Tuli, R P Gupta, Munish PuriThe enhanced fermentation effectiveness of Ruminiclostridium thermocellum on pure microcrystalline cellulose is well established. Here, direct microbial solubilization of pretreated rice straw biomass (PT-RSB) and sugarcane bagasse biomass (PT-SCB) to bioethanol by a Ruminiclostridium thermocellum strain ATCC 31924 was investigated. This study directly compared the influence of low (5 g L−1) and high glucan loadings (20 g L−1, 25 g L−1, and 30 g L−1) of these biomasses on the fermentation performance of strain ATCC 31924 under parallel conditions. Both the type of biomass and their initial glucan loadings impacted metabolic end product profiles and biomass conversion efficiency for strain ATCC 31924. After 144 h, biomass solubilization reached in the range of 25.67% to 61.40% for PT-RSB and 24.25% to 53.85% for PT-SCB, depending on loadings. This study establishes the potential of strain ATCC 31924 for the efficient conversion of low-cost renewable biomass to a carbon neutral product, particularly bioethanol.
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Journal
Bioresource technology reportsVolume
7Article number
100138Pagination
1 - 8Publisher
ElsevierLocation
Amsterdam, The NetherlandsPublisher DOI
ISSN
0960-8524eISSN
2589-014XLanguage
engPublication classification
C1 Refereed article in a scholarly journalUsage metrics
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