Abstract
The monosaccharide composition of cell wall material (CWM) in the cassava tuber and the contents of the other constituents were determined for more advanced industrial utilization. Starch, 80% ethanol-soluble sugar, uronic acid, lignin, ash, and CWM contents in the cassava tuber 86.1, 2.4, 3.4, 0.5, 0.9, and 4.5%, respectively. Rhamnose, fucose, arabinose, xylose, mannose, galactose, and glucose contents in CWM were 1.9, 1.2, 2.6, 4.2, 2.0, 12.8, and 52.7%, respectively. Then, the degradation pattern of CWM by enzymatic and sequential acid hydrolysis was studied. Aspergillus niger cellulase preparation was the most effective, and 57. 1 % of CWM was degraded by the enzyme preparation. On the other hand, about 50% of the hemicellulose part was extracted from CWM by hot water only.
