Table 1.
TPC, DPPH and ABTS radical scavenging activities of free and bound fractions of 14 potatoes.
| Code | Accession | Flesh Color | TPC | DPPH | ABTS | |||
|---|---|---|---|---|---|---|---|---|
| Bound | Free | Bound | Free | Bound | Free | |||
| PT10 | Weiyu 5 | white | 6.14 ± 0.11 E | 13.98 ± 0.17 EFG | 26.13 ± 1.75 D | 58.56 ± 0.66 F | 6.40 ± 1.15 EF | 31.22 ± 2.20 FG |
| PT12 | Helan 15 | white | 5.31 ± 0.19 EF | 19.91 ± 0.41 D | 20.05 ± 1.32 E | 67.71 ± 7.99 EF | 17.96 ± 0.95 CD | 45.63 ± 3.40 EF |
| PT28 | Dongnong 303 | white | 3.05 ± 0.50 FG | 11.43 ± 0.88 GH | 18.56 ± 0.52 E | 62.86 ± 5.32 F | 3.79 ± 0.03 F | 36.25 ± 4.91 FG |
| PT05 | Haerbin2 | yellow | 3.76 ± 0.45 FG | 17.21 ± 0.51 DE | 7.68 ± 0.87 FG | 59.45 ± 1.09 F | 0.64 ± 0.23 F | 45.71 ± 1.68 EF |
| PT29 | Kexin 13 | yellow | 3.41 ± 0.98 FG | 8.77 ± 0.38 H | 7.03 ± 0.66 G | 21.76 ± 0.70 H | 3.83 ± 0.87 F | 21.23 ± 0.58 G |
| PT30 | Helan | yellow | 2.63 ± 0.09 G | 12.93 ± 0.23 FG | 7.35 ± 0.67 G | 43.69 ± 0.24 G | 4.60 ± 0.69 F | 45.29 ± 1.08 EF |
| PT34 | Zhongshu 3 | yellow | 3.53 ± 0.03F G | 12.21 ± 1.49 GH | 9.68 ± 0.40 FG | 48.31 ± 2.12 G | 2.67 ± 1.99 F | 31.51 ± 4.79 FG |
| PT35 | Zhongshu 5 | yellow | 4.06 ± 0.39 F | 11.84 ± 2.97 GH | 10.92 ± 0.72 F | 42.23 ± 12.04 G | 13.21 ± 0.65 DE | 39.13 ± 5.64 EF |
| PT36 | Zhongshu 6 | yellow | 5.36 ± 0.50 E | 16.63 ± 1.16 DEF | 26.74 ± 0.15 D | 75.93 ± 4.58 E | 24.72 ± 1.02 C | 61.44 ± 4.30 D |
| PT38 | Zhongshu 13 | yellow | 4.16 ± 0.02 F | 16.52 ± 0.41 DEF | 18.77 ± 2.27 E | 68.01 ± 0.03E F | 13.74 ± 1.46 DE | 53.63 ± 1.68 DE |
| PT11 | Hongyu | red | 33.41 ± 0.02 B | 51.36 ± 2.57 C | 128.08 ± 4.23 B | 206.65 ± 6.85 D | 116.74 ± 2.18 A | 183.01 ± 6.42 C |
| PT14 | Lijiang | red | 7.72 ± 0.70 D | 65.18 ± 0.30 B | 29.20 ± 1.02 D | 240.18 ± 1.80 C | 8.38 ± 1.06 EF | 233.38 ± 5.43 B |
| PT13 | Heijinggang | purple | 19.33 ± 0.05 C | 73.60 ± 4.99 A | 62.67 ± 0.49 C | 278.33 ± 0.49 A | 53.32 ± 2.26 B | 309.48 ± 8.53 A |
| PT18 | Hemeiren | purple | 40.45 ± 1.38 A | 70.67 ± 0.86 A | 132.75 ± 0.43 A | 265.8 ± 0.92 B | 124.49 ± 13.10 A | 300.47 ± 21.76 A |
The results (means ± SD) of TPC are presented as mg gallic acid equivalent/100 g potato powder, and the results (means ± SD) of DPPH and ABTS are presented as μmol Trolox equivalent/100 g potato powder. The values in each column with different capital letters (A–H) are significantly different (p < 0.05). TPC, total phenolic content. DPPH, 1,1-diphenyl-2-picrylhydrazyl radical 2,2-diphenyl-1-(2,4,6-trinitrophenyl) hydrazyl. ABTS, 2,2-azino-bis-3-ethylbenzothiazoline-6-sulphonic acid diammonium salt.