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Selected alkaloids identified by mass spectrometry in the C. majus latex alkaloid-rich fraction (S3).
| Identification Results | RT (min) | [M]+ or [M + H]+ | % (Semi-Quantitative) |
|---|---|---|---|
| coptisine | 10.1 | 320.0912 | 9.30 |
| chelidonine | 9.0 | 354.1224 | 1.57 |
| berberine | 12.0 | 336.1225 | 3.43 |
| stylopine | 9.3 | 324.1229 | 1.35 |
| protopine | 8.2 | 354.1335 | 1.81 |
RT—retention time; [M]+ or [M + H]+—molecular ions; %—percentage content of alkaloids; all alkaloids identified by MS with their MS spectra are provided in Table S1.
