Table 7.
Effect of steaming time and species of sawdust on pH and phenolic compound content

Species of sawdust	Steaming time (min)	pH	Phenolic compound content (mg/g, dry weight)
Pine sawdust	0	4.7 ± 0.2 a*	154.7 ± 0.8 b
	10	4.8 ± 0.3 a	156.9 ± 0.6 a
	20	4.8 ± 0.4 a	151.1 ± 0.3 c
	30	4.8 ± 0.1 a	148.9 ± 0.4 d
Oak sawdust	0	4.4 ± 0.3 b	141.8 ± 0.3 a
	10	4.6 ± 0.2 b	141.1 ± 0.4 b
	20	5.3 ± 0.4 a	134.7 ± 0.0 c
	30	5.5 ± 0.3 a	126.4 ± 0.3 d

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