Table 1. Moisture content, water activity, water soluble index (WSI), water absorption index (WAI), and rehydration ratio of Aruncus dioicus var. kamtschaticus dried by hot-air drying and vacuum drying at 100℃ and freeze drying

Drying methods	Moisture content (%)	Water activity	WSI (%)	WAI (%)	Rehydration ratio(g/g)
Freeze drying	7.73±0.20¹⁾^a²⁾	0.48±0.03^a	9.85±0.34^a	903.97±0.46^a	2.80±0.09^a
Hot-air drying	6.04±0.20^b	0.48±0.02^a	6.86±1.28^a	844.87±0.44^c	2.40±0.17^b
Vacuum drying	5.20±0.20^c	0.47±0.01^a	7.69±1.48^a	868.58±0.20^b	2.59±0.17^a^b

¹⁾All values are mean±SD (n=6).
²⁾Different letters superscript indicate in the same column that means are significantly different (p<0.05) by Duncan’s multiple range test.