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Content of total alkaloids from seven Fritillaria samples by UV spectroscopy.
| Number | Sample | Absorbance | Total alkaloids (%) |
|---|---|---|---|
| 1 | Fritillaria ussuriensis Maxim | 0.282 | 0.1750 |
| 2 | Fritillaria thunbergii Miq. (big) | 0.387 | 0.2406 |
| 3 | Fritillaria thunbergii Miq. (small) | 0.344 | 0.2138 |
| 4 | Fritillaria pallidiflora Schrenk | 0.392 | 0.2430 |
| 5 | Fritillaria cirrhosa D. Don | 0.187 | 0.1160 |
| 6 | Fritillaria unibraacteate Hsiao et. K. C. Hsia | 0.327 | 0.2030 |
| 7 | Fritillaria delavayi Franch | 0.263 | 0.1640 |
