Abstract
The development of a headspace GC method (HS-GC) to determine the safrole content in differentAsarum species from China and Europe, using eugenol as internal standard, is presented in this paper. The best results could be achieved by thermostating the samples at 100°C for 30.0 min, adding 10 μL of water to each sample. Optimum pressurisation and injection time showed to be 3.0 min and 12 s, respectively. GC separation was performed on an SE-54 column. The HS-GC results for safrole were in good agreement with those obtained by direct GC analysis of the dichloromethane (DCM) plant extracts. The investigated Asarum samples showed great deviations concerning the safrole content even within the sameAsarum species, e.g.Asarum himalaicum from Sichuan contained 0.0051% of this compound, the same species from the province of Hebei 0.53%.
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