The impact of enzyme characteristics on corn stover fiber degradation and acid production during ensiled storage

Haiyu Ren, Tom L. Richard, Kenneth J. Moore

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

Ensilage can be used to store lignocellulosic biomass before industrial bioprocessing. This study investigated the impacts of seven commercial enzyme mixtures derived from Aspergillus niger, Trichoderma reesei, and T. longibrachiatum. Treatments included three size grades of corn stover, two enzyme levels (1.67 and 5 IU/g dry matter based on hemicellulase), and various ratios of cellulase to hemicellulase (C:H). The highest C: H ratio tested, 2.38, derived from T. reesei, resulted in the most effective fermentation, with lactic acid as the dominant product. Enzymatic activity during storage may complement industrial pretreatment; creating synergies that could reduce total bioconversion costs.

Original languageEnglish (US)
Pages (from-to)221-238
Number of pages18
JournalApplied Biochemistry and Biotechnology
Volume137-140
Issue number1-12
DOIs
StatePublished - Apr 1 2007

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Bioengineering
  • Biochemistry
  • Applied Microbiology and Biotechnology
  • Molecular Biology

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