Table 4.
Chemical properties of dried turmeric slice using microwave-vacuum dryer
| Conditions | EC50 (mg/L) | Total phenolic content (mg GAE/ g dry basis) | Curcuminoids (g /100 g dry basis) | Moisture content (%) |
|---|---|---|---|---|
| 1 | 59.56 ± 6.964 a | 54.95 ± 19.173 b | 10.08 ± 0.373 b | 74.18 ± 0.780a |
| 2 | 23.71 ± 2.363 c | 38.14 ± 1.506 b | 4.32 ± 0.687 b | 56.94 ± 1.456c |
| 3 | 46.76 ± 3.097 abc | 113.10 ± 17.679 a | 10.34 ± 6.944 b | 6.59 ± 0.236f |
| 4 | 57.58 ± 12.340 a | 46.31 ± 15.31 b | 6.924 ± 0.577 b | 76.24 ± 0.842a |
| 5 | 37.10 ± 14.536 abc | 34.29 ± 6.911 b | 4.19 ± 0.085 b | 50.08 ± 0.217d |
| 6 | 24.12 ± 5.947 c | 47.44 ± 8.772 b | 8.37 ± 1.757 b | 6.85 ± 0.431f |
| 7 | 52.98 ± 12.185 ab | 49.19 ± 18.606 b | 8.68 ± 2.202 b | 68.22 ± 0.309b |
| 8 | 23.41 ± 13.614 c | 24.62 ± 13.013 b | 5.18 ± 3.794 b | 41.53 ± 0.196e |
| 9 | 32.94 ± 6.183 bc | 48.68 ± 8.842 b | 19.04 ± 0.379 a | 4.59 ± 0.178 g |
*Values are mean of triplications ± SD. Within the same parameters, the values followed by the same superscript letters are not significantly different (P ≤ 0.05).
EC50 = Half maximal (antioxidant activity) effective concentration