Data/hora: 14/06/2024 04:14:58

Provedor de dados: 	69	
País: 	Chile	
Título: 	Statistical optimization for tannase production by Aspergillus tubingensis in solid-state fermentation using tea stalks	
Autores: 	Xiao,Anfeng; Huang,Yufeng; Ni,Hui; Cai,Huinong; Yang,Qiuming.	
Data: 	2015-05-01	
Ano: 	2015	
Palavras-chave: 	Aspergillus tubingensis; Process optimization; Response surface methodology; Tea stalks; Tannase fermentation.	
Resumo: 	Background A sequential statistical strategy was used to optimize tannase production from Aspergillus tubingensis using tea stalks by solid-state fermentation. Results First, using a Plackett-Burman design, inoculum size and incubation time (among seven tested variables) were identified as the most significant factors for tannase yield. The effects of significant variables were further evaluated through a single steepest ascent experiment and central composite design with response surface analysis. Under optimal conditions, the experimental value of 84.24 units per gram of dry substrate (U/gds) closely matched the predicted value of 87.26 U/gds. Conclusions The result of the statistical approach was 2.09 times higher than the basal medium (40.22 U/gds). The results were fitted onto a second-order polynomial model with a correlation coefficient (R²) of 0.9340, which implied an adequate credibility of the model.	
Tipo: 	Journal article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582015000300001	
Editor: 	Pontificia Universidad Católica de Valparaíso	
Formato: 	text/html	
Fonte: 	Electronic Journal of Biotechnology  v.18 n.3 2015