High-Yield Alpha-Cellulose from Oil Palm Empty Fruit Bunches by Optimizing Thermochemical Delignification Processes for Use as Microcrystalline Cellulose

Table 7

Confirmation of results at the optimization point on the response surface methodology.

Response	Predicted mean	95% PI low	95% PI high
Water-extractive material	7.013 ± 1.089	4.348	9.678
Hemicellulose	9.273 ± 2.283	3.590	14.955
Cellulose	82.959 ± 2.533	76.200	89.718
Lignin	1.682 ± 0.586	0.119	3.246