Research Article
Simultaneous Determination of Three Coumarins in Angelica dahurica by 1H-qNMR Method: A Fast and Validated Method for Crude Drug Quality Control
Table 4
Recovery (%) of the coumarins in A. dahurica by the using the 1H-qNMR method.
| Component | Content for the sample (mg) | Standard addition (mg) | Experimental value (mg) | Recovery (%) | Average recover (%) | RSD (%) |
| Imperatorin | 1.214 | 1.217 | 2.422 | 99.297 | 97.504 | 1.300 | 1.214 | 1.217 | 2.406 | 97.952 | 1.214 | 1.217 | 2.406 | 97.952 | 1.214 | 1.217 | 2.373 | 95.263 | 1.214 | 1.217 | 2.373 | 95.263 | 1.214 | 1.217 | 2.406 | 97.952 |
| Byakangelicin | 0.675 | 0.700 | 1.377 | 100.263 | 98.817 | 1.463 | 0.675 | 0.700 | 1.356 | 97.371 | 0.675 | 0.700 | 1.356 | 97.371 | 0.675 | 0.700 | 1.377 | 100.263 | 0.675 | 0.700 | 1.356 | 97.371 | 0.675 | 0.700 | 1.356 | 97.371 |
| Oxypeucedanin | 0.968 | 1.000 | 1.907 | 93.904 | 93.038 | 0.932 | 0.968 | 1.000 | 1.889 | 92.171 | 0.968 | 1.000 | 1.907 | 93.904 | 0.968 | 1.000 | 1.889 | 92.171 | 0.968 | 1.000 | 1.889 | 92.171 | 0.968 | 1.000 | 1.924 | 95.638 |
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