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Electronic Journal of Biotechnology ISSN: 0717-3458
  © 2011 by Universidad Católica de Valparaíso -- Chile
Vol. 14 No. 2, Issue of April 15, 2011
 

Table 1. Factors and levels used for the 29-5 fractional factorial design to improve xylanolytic activity production by Aspergillus niger GS1, using SSF with supplemented ACS.



Factor

Level (g L-1)

 

Low (-1)

High (1)

YE

12

16

AS

2.5

4.5

G

6.0

9.0

SP

3.0

4.0

MS

0.30

0.70

IS

0.10

0.30

PP

2.0

4.0

ZS

0.10

0.30

CUS

0.008

0.016

YE: yeast extract; AS: (NH4)2SO4; G: glucose; SP: Na2HPO4; MS: MgSO4•7H2O;
IS: FeSO4•7H2O; PP: KH2PO4; CUS: CuSO4•5H2O; ZS: ZnSO4.