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| 090 | _aB-11968 | ||
| 245 | 1 | 0 | _aRapid sample preparation technique for the determination of pyrrolizidine alkaloids in plant extracts |
| 490 | 0 | _vJournal of Chromatography A, 668(2), p.427-433, 1994 | |
| 520 | 3 | _aTo determine toxic pyrrolizidine alkaloids from various plant sources, a sample preparation technique is described that affords alkaloid fractions suitable for capillary GC or TLC determination. The procedure includes the reduction of the alkaloid N-oxides with the oxygen-absorbing resin Serdoxit and a clean-up with strong cation-exchange solid-phase columns. If desired an enrichment of the alkaloids can be obtained. The method was tested with methanolic extracts from Senecio vulgaris, Petasites hybridus and Symphytum ofjcinale. | |
| 700 | 1 | 2 | _aChizzola, R. |
| 856 | 4 | 0 |
_uhttps://drive.google.com/file/d/1x6KZqe2IaBMCWM7V7H71K4I323pNVbb0/view?usp=drivesdk _zPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx |
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