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Determination of rhein contents in Rheum officinale samples by icELISA and HPLC.
| Samplesa | Concentrations of rhein (mg g−1) | |
|---|---|---|
| icELISA | HPLC | |
| Gansu | 3.99 ± 0.20b | 3.59 ± 0.08 |
| Anguo, Hebei | 3.66 ± 0.22 | 3.52 ± 0.01 |
| Bozhou, Anhui | 3.33 ± 0.19 | 3.15 ± 0.09 |
| Bozhou, Anhui | 3.48 ± 0.29 | 3.20 ± 0.03 |
| Chengdu, Sichuan | 4.30 ± 0.29 | 4.14 ± 0.02 |
| Chengdu, Sichuan | 3.60 ± 0.35 | 3.26 ± 0.01 |
| Ganzhi, Sichuan | 4.59 ± 0.36 | 4.23 ± 0.04 |
aEach sample was analyzed in triplicate. bThe data represented the mean ± SD.
