Isolation and identification of a feather degrading Bacillus tropicus strain Gxun-17 from marine environment and its enzyme characteristics

Table 2 Factor and levels L9 (3⁴) of orthogonal design test

Levels	A Maltose concentration (g/L)	B Feather concentration (g/L)	C Initial pH	D MgSO₄ concentration (g/L)
1	5	20	7.0	0.05
2	0	25	7.5	0.10
3	10	15	8.0	0.15

ISSN: 1472-6750