LAUSR

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 is transferred directly into the GC injector for analysis in a one-step process. Approximately 0.3 g of the herb was needed for the desorption of samples in the 60s. 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. This article is protected by copyright. All rights reserved.