Table 6.
Vitamin C content in orange by-product dried at three different temperatures and air flows expressed as µg AA/g d.w. with average ± standard deviation.
| Ascorbic Acid | Dehydroascorbic Acid | Ascorbic Acid/Dehydroascorbic Acid Ratio | Total Vitamin C | |
|---|---|---|---|---|
| 40 °C | 522.41 ± 0.00 | 435.51 ± 0.00 | 1.20 | 957.92 ± 0.00 |
| 40 °C 0.8 m/s | 1007.67 ± 3.05 | 457.49 ± 1.39 | 2.20 | 1465.17 ± 4.44 |
| 40 °C 1.6 m/s | 1029.62 ± 5.38 | 503.60 ± 2.63 | 2.04 | 1533.21 ± 8.00 |
| 60 °C | 539.26 ± 0.04 | 342.30 ± 0.02 | 1.58 | 881.57 ± 0.06 |
| 60 °C 0.8 m/s | 707.22 ± 1.81 | 339.75 ± 0.87 | 2.08 | 1046.97 ± 2.68 |
| 60 °C 1.6 m/s | 715.01 ± 2.25 | 323.58 ± 1.02 | 2.21 | 1038.58 ± 3.27 |
| 80 °C | 478.65 ± 2.21 | 349.71 ± 1.62 | 1.37 | 828.36 ± 3.83 |
| 80 °C 0.8 m/s | 615.38 ± 3.85 | 347.15 ± 2.17 | 1.77 | 962.53 ± 6.02 |
| 80 °C 1.6 m/s | 507.13 ± 3.52 | 487.84 ± 3.39 | 1.04 | 994.96 ± 6.91 |