Characterization of lignocellulolytic activities from a moderate halophile strain of Aspergillus caesiellus isolated from a sugarcane bagasse fermentation
| Autor: | Denise Aceves-Zamudio, Laura I. Cuervo-Soto, Ramón Alberto Batista-García, Edgar Balcázar-López, Ayixon Sánchez-Reyes, Catalina Morales-Herrera, Rocío Rodríguez-Hernández, Jorge Luis Folch-Mallol, Karina Atriztán-Hernández, Estefan Miranda-Miranda |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
lcsh:Medicine
Mycology Cellulase Sodium Chloride Fuels Lignin Biochemistry Microbiology Fungal Proteins Extremophiles Manganese peroxidase Botany Food science Cellulose lcsh:Science Molecular Biology Stover Taxonomy Multidisciplinary biology Chemistry Ecology and Environmental Sciences lcsh:R Biology and Life Sciences Hydrogen-Ion Concentration Halophile Saccharum Energy and Power Aspergillus Biofuels visual_art biology.protein Xylanase visual_art.visual_art_medium Engineering and Technology Fermentation lcsh:Q Sawdust Bagasse Research Article Biotechnology |
| Zdroj: | PLoS ONE, Vol 9, Iss 8, p e105893 (2014) PLoS ONE |
| ISSN: | 1932-6203 |
| Popis: | A moderate halophile and thermotolerant fungal strain was isolated from a sugarcane bagasse fermentation in the presence of 2 M NaCl that was set in the laboratory. This strain was identified by polyphasic criteria as Aspergillus caesiellus. The fungus showed an optimal growth rate in media containing 1 M NaCl at 28°C and could grow in media added with up to 2 M NaCl. This strain was able to grow at 37 and 42°C, with or without NaCl. A. caesiellus H1 produced cellulases, xylanases, manganese peroxidase (MnP) and esterases. No laccase activity was detected in the conditions we tested. The cellulase activity was thermostable, halostable, and no differential expression of cellulases was observed in media with different salt concentrations. However, differential band patterns for cellulase and xylanase activities were detected in zymograms when the fungus was grown in different lignocellulosic substrates such as wheat straw, maize stover, agave fibres, sugarcane bagasse and sawdust. Optimal temperature and pH were similar to other cellulases previously described. These results support the potential of this fungus to degrade lignocellulosic materials and its possible use in biotechnological applications. |
| Databáze: | OpenAIRE |
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