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Recovery rate of the five marker compounds using the developed HPLC method for the Chinese sweet tea plant.
| Compound | Original mean (mg) |
Spiked mean (mg) |
Detected mean (mg) |
Recovery (%) |
RSD (%) (n=5) |
|---|---|---|---|---|---|
| Gallic acid | 0.66 | 0.45 | 1.09 | 95.56 | 3.99 |
| Rutin | 0.50 | 0.40 | 0.89 | 97.50 | 4.57 |
| Ellagic acid | 4.58 | 3.00 | 7.40 | 94.00 | 4.90 |
| Rubusoside | 25.07 | 25.00 | 48.34 | 93.08 | 2.35 |
| Steviol monoside | 0.36 | 0.40 | 0.75 | 97.50 | 3.23 |
