Data/hora: 12/06/2024 12:35:49

Provedor de dados: 	Anais da Academia Brasileira de Ciências	
País: 	Brazil	
Título: 	High cellulolytic activities in filamentous fungi isolated from an extreme oligotrophic subterranean environment (Catão cave) in Brazil	
Autores: 	PAULA,CAIO C.P. DE; MONTOYA,QUIMI V.; MEIRELLES,LUCAS A.; FARINAS,CRISTIANE S.; RODRIGUES,ANDRÉ; SELEGHIM,MIRNA H.R.	
Data: 	2019-01-01	
Ano: 	2019	
Palavras-chave: 	Cellulases; Fungu’s cave; Solid state fermentation; Submerged fermentation; Subterranean environment.	
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.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000500601	
Editor: 	Academia Brasileira de Ciências	
Relação: 	10.1590/0001-3765201920180583	
Formato: 	text/html	
Fonte: 	Anais da Academia Brasileira de Ciências  v.91 n.3 2019	
Fonte: 	info:eu-repo/semantics/openAccess