Bioconversion of Sugarcane Bagasse into Value-Added Products by Bioaugmentation of Endogenous Cellulolytic and Fermentative Communities

Author(s)

Soares, Lais Americo ^[1] ; Braga, Juliana Kawanish ^[1] ; Motteran, Fabricio ^[1] ; Sakamoto, Isabel Kimiko ^[1] ; Santiago Monteiro, Patricia Aparecida ^[2] ; Seleghim, Jr., Paulo ^[2] ; Amancio Varesche, Maria Bernadete ^[1]

Affiliation

^[1] Univ Sao Paulo, Joao Dagnone Ave 1100, BR-13563120 Sao Carlos, SP - Brazil

^[2] Univ Sao Paulo, Trabalhador Sancarlense Ave 400, BR-13566590 Sao Carlos, SP - Brazil

• Document type: Journal article
• Source: WASTE AND BIOMASS VALORIZATION; v. 10, n. 7, p. 1899-1912, JUL 2019.
• Web of Science Citations: 3

Abstract

The goals of this study were to describe a comprehensive taxonomic profile of bacterial communities endogenous from sugarcane bagasse (SCB) and from a thermophilic sludge formed mainly by Proteobacteria Actinobacteria and Firmicutes phylum and its potential as a bioaugmented inoculum for degradation of lignocellulosic biomass. Batch assays were performed using SCB as substrate at different condition: (RC) 2gL(-1) glucose, (R1i) 2gL(-1) unpretreated SCB, (R2i) 2gL(-1) hydrothermally pretreated SCB (at 210 degrees C for 15min), (R3i) 2gL(-1) hydrothermally pretreated SCB (at 210 degrees C for 15min) followed by alkaline delignification (NaOH1M), (R4i) 1gL(-1) unpretreated SCB plus 1gL(-1) hydrothermally pretreated SCB (at 210 degrees C for 15min) followed by alkaline delignification. Hydrogen, methane and organic acids were the main metabolites produced during the fermentation. Maximum hydrogen (2.01 and 1.09mol H(2)mol(-1) consumed soluble carbohydrates) were obtained in R1i and R2i, respectively. The highest organic acid (1051mgL(-1)) and methane (0.92 mmoL(-1)) production were obtained in R4i. (AU)

• FAPESP's process: 13/22346-6 - Hydrolysis of cane bagasse to hydrogen production in mesophilic and thermophilic conditions
• Grantee: Laís Américo Soares
• Support type: Scholarships in Brazil - Doctorate
• FAPESP's process: 09/15984-0 - Bioenergy production from wastewaters and environmental fitting of liquid and solid wastes generated
• Grantee: Marcelo Zaiat
• Support type: Research Projects - Thematic Grants