Table 1.
Chemical composition of oil palm stem and bark

Chemical component (%)	Stem			Bark
	Bottom	Middle	Upper
	Holocellulose	72.92	73.85		72.41	64.98
Hemicellulose	22.55	23.78	18.46	15.80
α-Cellulose	50.37	50.07	53.95	49.18
Lignin	25.78	24.73	21.56	33.61
Extractives	8.39	9.25	7.63	9.22
Ash	2.52	2.52	3.16	6.05