Application of Dynamic Temperature-Humidity Chamber for Measuring Moisture Sorption Isotherms of Biomaterials as Compared to the Conventional Isopiestic Method

Table 1

BET and GAB models’ parameters for commercial fibers and the enzyme hemicellulase.

Sample		BET model parameters				GAB model parameters
	(g/100 g)	(°C)	(g/100 g dry solids)			(g/100 g dry solids)
Cellulose	8.0	10	6.37	120.69	0.98	8.30	106.83	0.57	0.99
		30	4.82	25.91	0.99	5.83	23.09	0.72	0.99
		50	4.26	4.09	0.97	4.30	7.13	0.77	0.99
		70	1.42	4.55	0.99	3.00	5.00	0.39	0.97
		90	1.54	1.67	0.99	2.50	1.00	0.76	0.97
Lignin	3.9	10	7.28	196.14	0.99	8.00	400.00	0.87	0.99
		30	6.07	412.00	0.99	6.26	200.00	0.95	0.99
		50	5.68	70.44	0.99	5.88	60.00	0.95	0.85
		70	3.74	41.17	0.99	3.78	40.00	0.98	0.88
		90	2.20	20.22	0.99	2.52	20.00	0.99	0.96
Hemicellulase	0.7	10	3.98	9.65	0.99	4.75	10.00	0.72	0.99
		30	4.39	6.78	0.99	4.85	7.12	0.82	0.99
		50	3.21	4.25	0.99	3.39	4.38	0.91	0.99
		70	2.09	3.33	0.99	2.50	3.25	0.83	0.99
		90	1.31	1.40	0.99	1.70	1.22	0.88	0.99

: initial moisture content (g/100 g sample).