TY - JOUR
T1 - Influence of substrate loadings on the consolidated bioprocessing of rice straw and sugarcane bagasse biomass using Ruminiclostridium thermocellum
AU - Singh, Nisha
AU - Mathur, Anshu S.
AU - Barrow, Colin J.
AU - Tuli, Deepak K.
AU - Gupta, Ravi P.
AU - Puri, Munish
PY - 2019/9
Y1 - 2019/9
N2 - The 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.
AB - The 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.
KW - Bioethanol
KW - Consolidated bioprocessing
KW - Dilute-acid pretreatment
KW - Rice straw biomass
KW - Sugarcane bagasse biomass
UR - http://www.scopus.com/inward/record.url?scp=85067182417&partnerID=8YFLogxK
U2 - 10.1016/j.biteb.2019.01.010
DO - 10.1016/j.biteb.2019.01.010
M3 - Article
AN - SCOPUS:85067182417
VL - 7
JO - Bioresource Technology Reports
JF - Bioresource Technology Reports
SN - 2589-014X
M1 - 100138
ER -