Table 1.

Lysozyme hydration, h, determined by different methods

	aw = 0.75		aw = 0.91		aw = 0.95
	h (g/g ± SD)	N	h (g/g ± SD)	N	h (g/g ± SD)	N
Hydration
Bulk vapor sorption	0.18 ± 0.03	6	0.28 ± 0.03	6	0.52 ± 0.04	9
Sorption calorimetry∗	0.18	—	0.29	—	0.41	—
Dehydration
Decanol dehydration†	0.24 ± 0.03	17	0.40 ± 0.05	13	0.54 ± 0.09	13
Single-particle vapor sorption	0.28 ± 0.06	2	0.39 ± 0.05	4	0.54 ± 0.08	3
Bulk vapor sorption	0.20 ± 0.01	4	0.40 ± 0.04	7	0.51 ± 0.03	7
Sorption calorimetry∗	0.24	—	0.47	—	0.51	—

^∗Sorption calorimetry data taken from Fig. 3 in Kocherbitov et al. (29).

^†Water activities calculated from f = 0.51, 0.75, and 0.85, are 0.76, 0.91, and 0.96, respectively.