Table 3.

Experimental designs and the results of SAPD.

Groups	1	2	3	4	5
Incubation time (h)	24	36	48	60	72
L-Met concentration (g/L)	0	1	2	3	4
Yeast extract concentration (g/L)	0.2	0.4	0.6	0.8	1
3-Met concentration (g/L)	1.08	1.78	2.37	3.29	1.03