Xylo-oligosaccharides, fermentable sugars, and bioenergy production from sugarcane straw using steam explosion pretreatment at pilot-scale

Lívia B. Brenelli, Rakesh Bhatia, Demi T. Djajadi, Lisbeth G. Thygesen, Sarita C. Rabelo, David J. Leak, Telma T. Franco, Joe A. Gallagher

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)
21 Downloads (Pure)

Abstract

This study investigated the production of xylo-oligosaccharides (XOS) from sugarcane straw (SCS) using steam explosion (SE) pretreatment at pilot-scale, as well as co-production of other fermentable sugars and lignin-rich residues for bioethanol and bioenergy, respectively. SE conditions 200 °C; 15 bar; 10 min led to 1) soluble XOS yields of up to 35% (w/w) of initial xylan with ∼50% of the recovered XOS corresponding to xylobiose and xylotriose, considered the most valuable sugars for prebiotic applications; 2) fermentable glucose yields from the enzymatic hydrolysis of SE-pretreated SCS of up to ∼78%; 3) increase in the energy content of saccharified SCS residues (16%) compared to the untreated material. From an integrated biorefinery perspective, it demonstrated the potential use of SCS for the production of value-added XOS ingredients as well as liquid and solid biofuel products.
Original languageEnglish
Article number127093
JournalBioresource Technology
Volume357
Early online date27 May 2022
DOIs
Publication statusPublished - 01 Aug 2022

Keywords

  • Biofuels
  • Biorefining
  • Steam explosion
  • Sugarcane straw
  • Xylo-oligosaccharides

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