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Field desorption mass spectrometry, fast atom bombardment mass spectrometry and fast atom bombardment tandem mass spectrometry of echinacoside, the main caffeoyl-glycoside from Echinacea angustifolia roots (Asteraceae)

✍ Scribed by Roberto Maffei Facino; Anna Sparatore; Marina Carini; Bruno Gioia; Emanuele Arlandini; Luigi Franzoi

Publisher: John Wiley and Sons
Year: 1991
Tongue: English
Weight: 344 KB
Volume: 26
Category: Article
ISSN: 1076-5174
DOI: 10.1002/oms.1210261107

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✦ Synopsis

The mass spectral fragmentation of echinacoside, a pharmacologically active caffeoyl-glycoside isolated from Echinacea mgust$olia roots, has heen investigated using different soft-ionization techniques, field desorption and fast atom bombardment (positive and negative ions) mass spectrometry. Both ionization modes are successful in molecular mass determination and furnish approximately equivalent structural information. A fast atom bombardment tandem mass spectrometry approach (negative ions) was developed for the study of the fragmentation pathways and for the detection of echinacoside in crude plant extracts. The results demonstrate the usefulness of this technique for the rapid search of this important caffeoyl-glucoside directly in natural complex matrices.

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