Table 1 Chemical composition of initial, densified, as well as alkali-pretreated and densified wood for 3 h boiling time

No	Treatments	Chemical components (%)
No	Treatments	Holocellulose	Cellulose	Hemicellulose	Lignin
1	Initial wood (IW)	80.06^d	61.90^c	18.16^c	19.51^a
2	Densified wood (DW)	77.81^c	62.20^c	15.61^b	19.95^a
3	Alkali-treated wood (A3W)	62.60^b	60.07^b	2.53^a	25.21^c
4	Alkali-pretreated and densified wood (A3DW)	59.80^a	57.61^a	2.19^a	22.94^b

Holocellulose = Cellulose + Hemicellulose.
Values with the same letters are not significantly different based on Duncan’s test.