Table 3.
Chemical properties and antioxidant activities of dried silkworms in a hot-air oven at different drying temperatures.
| Properties | Drying Temperature (°C) | |||
|---|---|---|---|---|
| 80 | 100 | 120 | 140 | |
| Color L* | 47.07 a ± 0.27 | 44.80 c ± 0.24 | 46.13 b ± 0.40 | 44.42 c ± 0.44 |
| a* | 4.68 c ± 0.10 | 5.83 b ± 0.24 | 6.61 a ± 0.22 | 6.67 a ± 0.08 |
| b* | 17.01 a ± 0.38 | 14.36 c ± 0.68 | 15.96 b ± 0.50 | 13.75 c ± 0.28 |
| Moisture content (%) | 8.08 a ± 0.37 | 4.30 b ± 0.30 | 2.20 c ± 0.59 | 0.70 d ± 0.18 |
| Total phenolic compounds (µmol GAE/g DW) | 51.81 c ± 0.84 | 47.12 a ± 0.77 | 48.96 ab ± 1.53 | 50.29 bc ± 2.12 |
| Antioxidant Activities | ||||
| DPPH (µmol TE/g DW) | 69.09 b ± 0.58 | 68.59 ab ± 0.31 | 68.71 b ± 0.15 | 67.94 a ± 0.37 |
| ABTS (µmol TE/g DW) | 69.27 b ± 2.85 | 68.90 b ± 0.56 | 68.29 b ± 0.87 | 57.63 a ± 0.91 |
| FRAP (µmol of Fe2+/g DW) | 46.73 b ± 4.54 | 43.02 ab± 2.23 | 41.71 ab ± 2.61 | 39.89 a ± 2.17 |
The results were expressed as mean ± SD (n = 3) of triplicate measurements. Mean values with the different superscript lowercase letter are significantly different (p < 0.05).