Table 1.
Effect of different domestic cooking methods on proximate composition of potato from different varieties (g/100 g DW).
| Raw | Boiled | Steamed | Baked | Microwaved | Fried | Air-fried | Stir-fried | ||
|---|---|---|---|---|---|---|---|---|---|
| Xiapodi | Protein | 11.10 ± 0.82a | 10.24 ± 1.67a | 9.50 ± 0.72a | 9.30 ± 0.98a | 10.06 ± 0.86a | 10.31 ± 1.25a | 8.59 ± 0.97a | 10.78 ± 1.15a |
| Crude fiber | 6.17 ± 0.32e | 5.53 ± 0.64e | 5.80 ± 0.70e | 7.55 ± 0.83 cd | 9.06 ± 0.77c | 19.36 ± 0.98b | 24.73 ± 0.42a | 6.94 ± 0.39d | |
| Crude oil | 0.75 ± 0.20d | 0.68 ± 0.30d | 0.96 ± 0.07d | 1.22 ± 0.36d | 0.78 ± 0.33d | 25.47 ± 0.85a | 9.55 ± 0.54b | 4.29 ± 0.38c | |
| Ash | 5.67 ± 0.34a | 5.07 ± 0.29a | 5.29 ± 0.32a | 4.29 ± 0.87b | 4.84 ± 0.30b | 5.10 ± 0.60ab | 4.99 ± 0.54ab | 4.42 ± 0.30b | |
| Vitamin C* | 156.40 ± 2.59a | 82.62 ± 0.98c | 60.47 ± 1.70e | 38.98 ± 2.59 h | 101.04 ± 2.13b | 68.19 ± 0.99d | 60.47 ± 1.23f | 48.24 ± 2.59 g | |
| Helanshiwu | Protein | 9.30 ± 0.73a | 8.26 ± 0.67ab | 5.48 ± 1.02c | 7.27 ± 0.48b | 8.56 ± 0.59a | 8.34 ± 0.95ab | 7.48 ± 0.90ab | 9.28 ± 0.59a |
| Crude fiber | 7.50 ± 0.61b | 6.49 ± 1.05b | 7.21 ± 1.79b | 7.23 ± 0.83b | 8.11 ± 1.52b | 22.15 ± 2.08a | 23.53 ± 1.42a | 7.68 ± 0.63b | |
| Crude oil | 0.90 ± 0.23d | 0.72 ± 0.30d | 1.06 ± 0.17d | 1.34 ± 0.42d | 0.89 ± 0.33d | 24.07 ± 0.15a | 7.62 ± 0.37b | 3.87 ± 0.42c | |
| Ash | 7.04 ± 0.54a | 6.92 ± 0.79ab | 6.55 ± 0.42a | 6.30 ± 0.87ab | 5.81 ± 0.96ab | 6.18 ± 0.60as | 5.92 ± 0.54ab | 5.43 ± 0.70b | |
| Vitamin C | 186.58 ± 2.59a | 95.62 ± 0.98d | 109.47 ± 1.70c | 59.98 ± 2.59f | 120.04 ± 2.13b | 52.19 ± 0.99 g | 36.47 ± 1.23 h | 86.24 ± 2.59e | |
| Zhongshubahao | Protein | 7.61 ± 0.51a | 6.90 ± 0.77ab | 6.34 ± 1.57ab | 6.29 ± 0.80ab | 7.56 ± 1.00ab | 5.99 ± 0.87b | 6.46 ± 1.08ab | 7.18 ± 0.49ab |
| Crude fiber | 10.65 ± 0.40c | 9.53 ± 0.25d | 8.79 ± 1.57d | 11.50 ± 0.63c | 10.00 ± 0.58c | 23.36 ± 1.83a | 18.53 ± 1.42b | 11.14 ± 0.50c | |
| Crude oil | 0.71 ± 0.15d | 0.59 ± 0.20d | 0.93 ± 0.17d | 1.09 ± 0.32d | 0.58 ± 0.42d | 20.30 ± 1.05a | 10.59 ± 0.77b | 3.00 ± 0.59c | |
| Ash | 6.26 ± 0.53a | 5.89 ± 0.69aa | 6.06 ± 0.50a | 5.85 ± 0.47a | 6.25 ± 0.50a | 5.66 ± 0.27a | 6.33 ± 0.14a | 5.54 ± 0.30a | |
| Vitamin C | 253.24 ± 2.59a | 105.62 ± 0.98d | 159.47 ± 1.70b | 75.98 ± 2.59 g | 135.04 ± 2.13c | 82.19 ± 0.99e | 77.47 ± 1.23f | 50.91 ± 1.29 h | |
(Note: a-e in each row indicates significantly different at p < 0.05; *: mg/100 g DW).