Journal
JOURNAL OF MASS SPECTROMETRY
Volume 43, Issue 1, Pages 97-107Publisher
WILEY
DOI: 10.1002/jms.1276
Keywords
lignan; HPLC; ESI; MS; ion trap; fragmentation
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The fragmentation pattern of 30 compounds belonging to different classes of the lignan family was studied by liquid chromatography-electrospray ionization ion-trap mass spectrometry. On the basis of the observed fragmentation patterns, identification of different types of lignans was achieved. For example, dibenzylbutyrolactone lignans showed a characteristic fragmentation pathway by the loss of 44 Da (CO2) from the lactone moiety, whereas dibenzylbutanediols showed a loss of 48 Da by a combined loss of formaldehyde and water from the 1,4-butanediol moiety. Lignan glycosides readily lost the sugar residue to give the parent lignan as their primary product ion. In addition, several compound-specific fragmentations were observed and used for identification of individual compounds. A versatile method for analyses of lignans was developed using LC separation on a C8 column followed by fragmentation and detection of ions produced in the ion trap. Copyright (c) 2007 John Wiley & Sons, Ltd.
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