Abstract
A new GC-MS method for monitoring lignans was developed to study the variation in plants and elucidate the biosynthetic steps. A simple and fast extraction procedure for lyophilised plant material was developed, giving a lignan-rich extract. A GC-MS method was set up using an apolar WCOT fused silica column using a high temperature programme (150 degrees C to 320 degrees C at 15 degrees C min(-1)). This new GC-MS method gave a clear lignan profile of plant material. It was possible to show the large variation in the concentrations of deoxypodophyllotoxin (DOP), yatein and anhydropodorhizol (AHP) in Anthriscus sylvestris (L.) Hoffm. plants growing on different locations using cinchonidin as an internal standard. In contrast with existing GC methods for lignan analysis no derivatisation is needed. It is also possible to use this method for the detection of different classes of lignans in biosynthetically related plant species.
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