Bioconversion of food and lignocellulosic wastes employing sugar platform: A review of enzymatic hydrolysis and kinetics

Raffel Dharma Patria, Shazia Rehman, Arun K. Vuppaladadiyam, Huaimin Wang, Carol Sze Ki Lin, Elsa Antunes, Shao Yuan Leu

Research output: Journal article publicationReview articleAcademic researchpeer-review

Abstract

Bioenergy and biochemicals can be sustainably produced through fermentation and anaerobic digestion (AD). However, this bioconversion processes could be more economical if the hydrolysis rates of substrates in bioreactors can be accelerated. In this review, the feasibilities of including enzymatic hydrolysis (EH) in various bioconversion systems were studied to facilitate the biological synergy. The reaction kinetics of EH in bioconversion systems comparing pretreated lignocellulosic biomass (LCB) and food waste (FW) substrates were reviewed. Possible strategies to improve the hydrolysis efficiency were explored, including co-cultivation during enzyme production and replacement of pure enzyme with on-site produced fungal mash during EH. Key insights into improvement of current AD and fermentation technologies were summarized and further formed into suggestions of future directions in techno-economic feasibility of biorefinery using mixture of the first-generation food crop feedstock with FW; and/or co-digestion of FW with LCB.

Original languageEnglish
Article number127083
JournalBioresource Technology
Volume352
DOIs
Publication statusPublished - May 2022

Keywords

  • Anaerobic digestion
  • Biofuel
  • Biorefinery
  • Fermentation
  • Waste valorization

ASJC Scopus subject areas

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

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