عنوان مجله
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JOURNAL OF SEPARATION SCIENCE
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کلیدواژهها
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direct microwave desorption, Echinophora platyloba, essential oils, gas chromatography, mass
spectrometry
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چکیده
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A new direct microwave desorption–gas chromatography-mass spectrometry method
was developed for the analysis of the essential oils of medicinal plants. A homemade
direct microwave desorption system was fabricated and used for the desorption of
volatile components of medicinal herbs. The desorbed volatiles are transferred directly
into the gas chromatography injector for analysis in a one-step process. Approximately
0.3 g of the herb was needed for the desorption of samples in 60 s. In this study, more
than 53 volatile compounds were identified and quantified for Echinophora platyloba
DC as model herb sample. The results were found to be in good agreement with the
conventional hydrodistillation extraction data. The described results show that direct
microwave desorption is fast, simple, and easy to automate and requires only a small
amount of sample. The results indicate that essential oil components valuable for varietal identification and characteristic of each variety analyzed when direct microwave
desorption–gas chromatography-mass spectrometry was used for analysis.
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