| Registro completo |
| Provedor de dados: |
Anais da ABC (AABC)
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| País: |
Brazil
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| Título: |
High cellulolytic activities in filamentous fungi isolated from an extreme oligotrophic subterranean environment (Catão cave) in Brazil
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| Autores: |
PAULA,CAIO C.P. DE
MONTOYA,QUIMI V.
MEIRELLES,LUCAS A.
FARINAS,CRISTIANE S.
RODRIGUES,ANDRÉ
SELEGHIM,MIRNA H.R.
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| Data: |
2019-01-01
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| Ano: |
2019
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| Palavras-chave: |
Cellulases
Fungu’s cave
Solid state fermentation
Submerged fermentation
Subterranean environment
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| Resumo: |
Abstract Abstract: Isolation and screening of new fungal strains from extreme and understudied environments, such as caves, is a promising approach to find higher yields enzyme producers. Cellulolytic fungal strains isolated from a Brazilian cave were evaluated for their enzymatic production after submerged (SmF) and solid-state fermentation (SSF). After SmF, three strains were selected for their high enzymatic activities: Aspergillus ustus for endoglucanase (4.76 U/mg), Talaromyces bruneus for β-glucosidase (11.71 U/mg) and Aspergillus sp. (CBMAI 1926) for total cellulase (1.70 U/mg). After SSF, these strains, showed better yields compared to the reference strain Aspergillus niger 3T5B8. Aspergillus sp. (CBMAI 1926) stood out as a new species that expressed activity of total cellulases (0.10 U/mg) and low protein concentration (0.44 mg/mL). In conclusion, these isolated strains have a more efficient and promising cellulolytic enzyme complex that can be used in fermentation and saccharification processes with a lower protein concentration and a higher enzymatic activity than the reference strain. Therefore, beside the new genetic material characterized, our study highlights the benefits of cave extreme environments exploitation to find new potentially valuable strains.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000500601
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| Editor: |
Academia Brasileira de Ciências
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| Relação: |
10.1590/0001-3765201920180583
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| Formato: |
text/html
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| Fonte: |
Anais da Academia Brasileira de Ciências v.91 n.3 2019
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| Direitos: |
info:eu-repo/semantics/openAccess
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