Table 1.

DOM content in initial substrate, control substrate and residue in different treatments.

	Substrate
	1	2	3	4	5
Initial	28.8	24.62	22.43	18.51	13.66
Control	42.45 ± 0.46	34.16 ± 0.40	37.18 ± 0.50	42.31 ± 0.47	52.4 ± 0.53
Residue	79.38 ± 0.42	60.81 ± 0.55	57.62 ± 0.65	60.66 ± 0.30	54.62 ± 0.37

Note: T1: 100% wet distiller’s grains (WDG) ; 2: 75% WDG + 25% spent mushroom substrate (SMS) ; 3: 50% WDG + 50% SMS; 4: WDG + 75% SMS ; 5: 100% SMS + BSFL.