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Journal of Wood Science

Official Journal of the Japan Wood Research Society

Table 1 The variables and their levels for the Box-Behnken design

From: Ethanol production from sugi pulp under simultaneous saccharification and fermentation using a cocktail enzyme of T. reesei and A. tubingensis produced by solid-state fermentation

Factor code

Factor

Levels

−1

0

+1

X 1

(NH4)2SO4 (%)

0

2

4

X 2

Corn cob (%)

0

25

50

X 3

Culture period (d)

3

5

7

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