Table 5.
Effect of steaming time and species of sawdust on C/N

Species of sawdust	Steaming time (min)	C (%)	N (%)	C/N ratio
Pine sawdust	0	50.3 ± 0.2 b*	0.1 ± 0.0 b	503 a
	10	50.0 ± 0.3 b	0.1 ± 0.0 b	500 a
	20	49.9 ± 0.4 b	0.1 ± 0.0 b	499 a
	30	51.8 ± 0.2 a	0.2 ± 0.0 a	259 b
Oak sawdust	0	48.6 ± 0.1 ab	0.1 ± 0.0 b	486 a
	10	48.4 ± 0.3 b	0.1 ± 0.0 b	484 a
	20	48.5 ± 0.4 b	0.1 ± 0.0 b	485 a
	30	49.1 ± 0.3 a	0.2 ± 0.0 a	246 b

Mean separation within columns each species by Duncan’s multiple range test at p = 0.05