Table 2.

Main effects of all the selected factors

Sl. No:	Factors	Level 1	Level 2	L2 - L1
1	Temperature (°C)	54.718	54.769	.05
2	pH	54.662	54.825	.163
3	NH4H2PO4 (%)a	54.741	54.746	.005
4	Galactose (%)	54.967	54.52	-.447
5	Cupric sulphate (mM)	53.721	55.766	2.045
6	Inoculum concentration	54.626	54.861	.234
7	Substrate length (m)	54.185	55.302	1.116

^aPercentage against buffer