Table 4.
Accuracy of the HPLC method for the determination of the four flavonoids (1–4)
| Flavonoids | Original (mg) | Spiked (mg) | Found (mg) | Recovery a (%) | RSD b (%) |
|---|---|---|---|---|---|
| |
|
0.13 |
0.27 |
97.8 |
1.99 |
|
1 |
0.14 |
0.15 |
0.29 |
96.0 |
0.38 |
| |
|
0.18 |
0.32 |
100.1 |
2.55 |
| |
|
0.11 |
0.24 |
102.2 |
2.06 |
|
2 |
0.13 |
0.13 |
0.27 |
103.5 |
3.49 |
| |
|
0.16 |
0.29 |
104.0 |
5.51 |
| |
|
0.07 |
0.16 |
104.6 |
2.56 |
|
3 |
0.08 |
0.09 |
0.17 |
96.1 |
4.55 |
| |
|
0.10 |
0.19 |
101.9 |
0.96 |
| |
|
0.04 |
0.09 |
97.4 |
3.62 |
|
4 |
0.05 |
0.05 |
0.10 |
104.6 |
0.65 |
| 0.06 | 0.11 | 97.4 | 3.20 |
aRecovery (%) = 100 × (amount found - original amount) / amount spiked.
bRSD (%) = 100 × SD / mean.