AMB Express

Table 4 Factorial fractional design matrix FF 2⁴⁻¹ (real and coded values) with their respective responses (enzymatic activity). The experiments were conducted at 28 °C and 140 rpm

From: Marine-derived fungus Aspergillus cf. tubingensis LAMAI 31: a new genetic resource for xylanase production

Run	Variables^a.b				Xylanase (U/mL)
Run	pH	Inoculum (pellets)	Peptone	RS	Xylanase (U/mL)
1	6 (−1)	5 (−1)	0 (−1)	70 (−1)	135.30
2	8 (1)	5 (−1)	0 (−1)	110 (1)	91.21
3	6 (−1)	7 (1)	0 (−1)	110 (1)	104.78
4	8 (1)	7 (1)	0 (−1)	70 (−1)	124.37
5	6 (−1)	5 (−1)	80 (1)	110 (1)	63.69
6	8 (1)	5 (−1)	80 (1)	70 (−1)	61.43
7	6 (−1)	7 (1)	80 (1)	70 (−1)	79.90
8	8 (1)	7 (1)	80 (1)	110 (1)	42.97
9 (C)	7 (0)	6 (0)	40 (0)	90 (0)	73.12
10 (C)	7 (0)	6 (0)	40 (0)	90 (0)	72.74
11 (C)	7 (0)	6 (0)	40 (0)	90 (0)	88.19
12 (C)	7 (0)	6 (0)	40 (0)	90 (0)	50.50

c central point, RS rice straw
^a Coded values in parenthesis
^b Values in g/L

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