Abstract：
:Lignin-modifying enzymes have various promising applications such as biobleaching, biopulping, the functionalization of lignocellulosic materials, the modification of wood fibers, the remediation of contaminated soil and effluents, as well as improvement of the enzymatic hydrolysis of lignocellulosic substrates. In this study, the production of laccase and manganese peroxidase (MnP) in solid-state cultivation was examined. Oat husks were used as an inexpensive substrate for the white-rot fungus Cerrena unicolor PM170798 (FBCC 387). The addition of a fines fraction (consisting of oat flour and finely ground husks) enhanced MnP production fivefold and laccase production almost threefold. The enzyme production was studied first on a 100 g scale, and the cultivation experiments were then repeated at a larger laboratory-scale (4 kg) in a solid-state bioreactor. High enzyme activity levels were obtained (MnP: 340 nkat g(-1) DM, laccase: 470 nkat g(-1) DM). In addition, the correlation between the CO2 evolution rate and enzyme production was mathematically modeled from the bioreactor experimental data. The model parameters could be used to predict enzyme production.
journal_name
Bioprocess Biosyst Engjournal_title
Bioprocess and biosystems engineeringauthors
Moilanen U,Winquist E,Mattila T,Hatakka A,Eerikäinen Tdoi
10.1007/s00449-014-1243-0subject
Has Abstractpub_date
2015-01-01 00:00:00pages
57-68issue
1eissn
1615-7591issn
1615-7605journal_volume
38pub_type
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