Abstract
Cynanchum paniculatum (Bge.) Kitag (Asclepiadaceae) is a medicinal plant from China. The essential oil of the leaves and roots was isolated and analyzed by GC/FID and GC/MS. Eight and nine compounds were identified in the oil from leaves and roots, respectively. The predominant component found in both oils was paeonol (78.2% and 86.3%). The most striking difference among the oil samples was the presence of 3,4-dimethoxyphenylacetone in the leaf oil. The leaf oil yield was 0.5% (w/w) and the root oil yield was 1.1% (w/w).
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