Inhibition of cellulose saccharification and glycolignin-attacking enzymes of five lignocellulose-degrading fungi by ferulic acid
✍ Scribed by F. O. Asiegbu; A. Paterson; J. E. Smith
- Book ID
- 104723717
- Publisher
- Springer
- Year
- 1996
- Tongue
- English
- Weight
- 568 KB
- Volume
- 12
- Category
- Article
- ISSN
- 1573-0972
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✦ Synopsis
At 5 g/l, ferulic acid, a plant cell-wall phenolic, severely repressed growth of the lignocellulose-degrading fungi Trichoderma harzianum, Chaetomium cellulolyticum, Phanaerochaete chrysosporium, Trametes versicolor and Pleurotus sajor-caju. At 0.5 g/l, howerver, it slightly stimulated growth of the latter two organisms. Two classes of extracellular enzymes involved in cellulose and glycolignin breakdown were assayed: cellulases; and phenol oxidases as laccases. All of the strains depolymerized cellulose but two (T. versicolor and P. sajor-caju) also secreted laccases. Laccase-secreting fungal species had normal levels of cellulose saccharification except in the presence of 5 g ferulic acid/l, whereas saccharification by the other strains was suppressed at all concentrations of the phenolic tested.