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Egyptian Journal of Biological Pest Control

Table 1 Variable codes and their levels employed in the two-level factorial design for screening of medium components affecting xylanase production by Aspergillus oryzae MN894021

From: Statistical optimization of xylanase production, using different agricultural wastes by Aspergillus oryzae MN894021, as a biological control of faba bean root diseases

Variable codes

Variables

Units

Low level (−1)

High level (+1)

A

Substrate con.

%

1.5

2.5

B

Yeast extract

g/l

7.0

9.0

C

(NH4)2SO4

g/l

2.0

6.0

D

KH2PO4

g/l

1.5

2.5

F

MgSO4.7H2O

g/l

2.0

3.0

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