Table 1 Linearity curves, LOD and LOQ for six compounds
Peak | Compounds | Linear equations | Range (μg/mL) | R 2 | LOD (ng) | LOQ (ng) |
|---|---|---|---|---|---|---|
1 | Dracorhodin | y = 8580.5x + 8536.8 | 5-250 | 0.9998 | 0.48 | 1.60 |
2 | 4,6-Dihydroxy-2-methoxy-3- methyldihydrochalcone | y = 6472.4x + 1430.2 | 1-50 | 0.9982 | 0.15 | 0.50 |
3 | 4,6-Dihydroxy-2-methoxy-3- methylchalcone | y = 6529.5x - 2240.9 | 1-50 | 0.9999 | 0.52 | 1.73 |
4 | (2S)-5,7-Dihydroxy- dihydroflavone | y = 25710.1x + 14943.4 | 1-50 | 0.9989 | 0.06 | 0.20 |
5 | (2S)-5-Methoxyflavan-7-ol | y = 989.1x + 16685.5 | 20-1000 | 0.9992 | 0.83 | 2.76 |
6 | (2S)-5-Methoxy-6-methyl- flavan-7-ol | y = 4098.2x + 14161.0 | 5-250 | 0.9991 | 0.21 | 0.70 |