Table 2. Moisture content, water activity, soluble solid, browning degree, pH, titratable acidity and total ascorbic acid of dried lotus root depending on drying methods
| Moisture content (%) | Water activity (Aw) | Soluble solids (%) | Browning degree (OD 760 nm) | pH | Titratable acidity (%) | Total ascorbic acid (mg%) |
| Freeze drying | 4.00±0.491) | 0.24±0.01 | 2.83±0.06 | 0.02±0.00NS3) | 6.31±0.03 | 0.51±0.01 | 9.63±0.41 |
| Cold vacuum drying | 2.27±0.22***2) | 0.31±0.03 | 2.70±0.00 | 0.02±0.00NS | 6.38±0.02 | 0.43±0.01*** | 7.51±0.57*** |
Values are mean±SD (n=3).
Means followed by three asterisks within the same columns are significantly different by t-test (p<0.001).
NS, not significant.