Data/hora: 16/06/2024 00:44:40

Provedor de dados: 	52	
País: 	Brazil	
Título: 	Production and properties of Xylanase from thermophilic Bacillus sp.	
Autores: 	Cordeiro,Carlos Alberto Martins; Martins,Meire Lelis Leal; Luciano,Angélica Bárbara; Silva,Roberta Freitas da.	
Data: 	2002-12-01	
Ano: 	2002	
Palavras-chave: 	Xylanase; Thermophilic bacterium; Bacillus sp.	
Resumo: 	An aerobic, thermophilic, xylanolytic bacterium was isolated from local soil. The results of 16S rRNA sequence comparisons indicated that the isolate was closely related to Bacillus caldoxylolyticus and Bacillus sp strain AK1. These organisms exhibited 94% levels of ribossomal DNA sequence homology. Studies on the xylanase characterisation from liquid cultures grown on beechwood xylan revealed that the enzyme retained 100% of activity for 2 hours at temperatures ranging from 30 to 50º C, while at 60, 70 and 100º C, 10%, 11% and 29% of the original activities were lost, respectively. The optimum pH of the enzyme was found to be between 6.5 and 7.0. After incubation of crude enzyme solution for 24 hours at 25º C and at pH 5.5 to 8.0, a decrease of about 12% of its original activity was observed.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000600002	
Editor: 	Instituto de Tecnologia do Paraná - Tecpar	
Relação: 	10.1590/S1516-89132002000600002	
Formato: 	text/html	
Fonte: 	Brazilian Archives of Biology and Technology  v.45 n.4 2002	
Fonte: 	info:eu-repo/semantics/openAccess