Table 2. Total flavonoid compounds identified by HPLC analyses of the 4 ethanolic extracts of thermally stressed tomato seedlings, S. lycopersicum.
No. | Compound | RT in min | Area [mAU*s] | Area (%) | Amount (%) | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Con | CS | HS1 | HS2 | Con | CS | HS1 | HS2 | Con | CS | HS1 | HS2 | Con | CS | HS1 | HS2 | ||
1 | Catechin | 8.85 | 8.78 | 8.97 | 8.98 | 79.97 | 17.900 | 219.50 | 54.59 | 70.70 | 2.87 | 79.00 | 37.05 | 8.39 | 0.14 | 25.36 | 3.08 |
2 | Rutin | 16.70 | 16.71 | 16.51 | 16.53 | ND* | 188.450 | 52.25 | 27.53 | ND | 30.23 | 18.81 | 18.69 | ND | 20.81 | 54.90 | 10.65 |
3 | Quercetin | 21.43 | 21.07 | 21.75 | 21.43 | 19.34 | 392.302 | 6.09 | 59.26 | 17.10 | 62.94 | 2.19 | 40.22 | 45.31 | 73.25 | 19.74 | 69.44 |
4 | Neringein | 22.20 | 22.20 | 22.20 | 22.20 | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
5 | Myricetin | 23.54 | 23.67 | 23.48 | 23.34 | 13.81 | 6.79 | ND | 1.84 | 12.21 | 1.09 | ND | 1.25 | 46.30 | 2.90 | ND | 11.77 |
6 | Kampherol | 24.45 | 24.06 | 24.45 | 24.41 | ND | 17.87 | ND | 4.11 | ND | 2.87 | ND | 2.79 | ND | 2.90 | ND | 5.06 |
Notes:
ND: Not detected.
Compounds were identified according to RT of the separated signals. Con, Control; CS, Cold-stressed; HS1, First level of heat stress and HS2, Second level of heat stress.