1. Using low-shear aerated and agitated bioreactor for producing two specific laccases by trametes versicolor cultures induced by 2,5-xylidine: Process development and economic analysis.
- Author
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Fernandes, André J., Shibukawa, Vinícius P., Prata, Arnaldo M.R., Segato, Fernando, dos Santos, Julio C., Ferraz, André, and Milagres, Adriane M.F.
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LACCASE , *TRAMETES versicolor , *FUNGAL morphology , *REDUCTION potential , *PAYBACK periods , *BASIDIOMYCETES - Abstract
[Display omitted] • Large-scale submerged cultivation for laccase production is a matter of improvement. • Agitation and aeration affect fungal morphology influencing laccase production. • Low-shear aerated and agitated reactor is a simple design for laccase production. • Simulation of 200-L enterprise suggested that a low-cost laccase is produced. Laccase isoforms from basidiomycetes exhibit a superior redox potential compared to commercially available laccases obtained from ascomycete fungi, rendering them more reactive toward mono-substituted phenols and polyphenolic compounds. However, basidiomycetes present limitations for large-scale culture in liquid media, restraining the current availability of laccases from this fungal class. To advance laccase production from basidiomycetes, a newly designed 14-L low-shear aerated and agitated bioreactor provided enzyme titers up to 23.5 IU/mL from Trametes versicolor cultures. Produced enzymes underwent ultrafiltration and LC/MS-MS characterization, revealing the predominant production of only two out of the ten laccases predicted in the T. versicolor genome. Process simulation and economic analysis using SuperPro designer® suggested that T. versicolor laccase could be produced at US$ 3.60/kIU in a 200-L/batch enterprise with attractive economic parameters and a payback period of 1.7 years. The study indicates that new bioreactors with plain design help to produce low-cost enzymes from basidiomycetes. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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