Genomic driven factors enhance biocatalyst-related cellulolysis potential in anaerobic digestion

Huichuan Zhuang, Po Heng Lee, Zhuoying Wu, Houde Jing, Jianyu Guan, Xiaojing Tang, Giin Yu Amy Tan, Shao Yuan Leu

Research output: Journal article publicationReview articleAcademic researchpeer-review

Abstract

Anaerobic digestion (AD) is a promising technology to recover bioenergy from biodegradable biomass, including cellulosic wastes. Through a few fractionation/separation techniques, cellulose has demonstrated its potential in AD, but the performance of the process is rather substrate-specific, as cellulolysis bacteria are sensitive to the enzyme-substrate interactions. Cellulosome is a self-assembled enzyme complex with many functionalized modules in the bacteria which has been gradually studied, however the genomic fingerprints of the culture-specific cellulosome in AD are relatively unclear especially under processing conditions. To clarify the key factors affecting the cellulosome induced cellulolysis, this review summarized the most recent publications of AD regarding the fates of cellulose, sources and functional genes of cellulosome, and omics methods for functional analyses. Different processes for organic treatment including applying food grinds in sewer, biomass valorization, cellulose fractionation, microaeration, and enzymatic hydrolysis enhanced fermentation, were highlighted to support the sustainable development of AD technology.

Original languageEnglish
Article number125148
JournalBioresource Technology
Volume333
DOIs
Publication statusPublished - Aug 2021

Keywords

  • Anaerobic digestion
  • Biomass
  • Cellulolysis
  • Cellulosome
  • Cellulosome-embedded prokaryotes

ASJC Scopus subject areas

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

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