Chemical-free production of multiple high-value bioproducts from metabolically engineered transgenic sugarcane ‘oilcane’ bagasse and their recovery using nanofiltration

Yuyao Jia, Shraddha Maitra, Vijay Singh

Research output: Contribution to journalArticlepeer-review

Abstract

Bioenergy crops have potential for being a sustainable and renewable feedstock for biofuels and various value-added bioproducts. The study utilizes recently developed transgenic sugarcane (‘oilcane’) bagasse for chemical-free coproduction of high-value bioproducts, i.e., furfurals, HMF, acetic acid, cellulosic sugars, and vegetative lipids. Hydrothermal pretreatment was optimized at 210 °C for 5 min to coproduce 6.91%, 2.67%, 5.07%, 2.42% and 37.82% (w/w) furfurals, HMF, acetic acid, vegetative lipids, and cellulosic sugars, respectively from lignocellulosic biomass. Additionally, nanofiltration system in-series was successfully established to recover sugars, furfurals, HMF, and acetic acid from the pretreatment liquor. 1st nanofiltration with Duracid NF membrane rejected ∼99% sugars. Concentrated sugars with significantly reduced inhibitory products were obtained in retentate for fermentation. 2nd nanofiltration with NF90 membrane used permeate of 1st nanofiltration as feed and rejected ∼ 86% furfurals. The work demonstrates the feasibility of coproducing and recovering multiple biochemicals from lignocellulosic biomass.

Original languageEnglish (US)
Article number128630
JournalBioresource Technology
Volume371
DOIs
StatePublished - Mar 2023

Keywords

  • Hydrothermal pretreatment
  • Lignocellulosic biomass
  • Nanofiltration
  • Platform chemicals

ASJC Scopus subject areas

  • Bioengineering
  • Waste Management and Disposal
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment

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