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The essential oils from roots, branches, leaves and bark of  Magnolia sumatrana  var.  glauca  (Blume) Figlar &amp; Noot and  Magnolia hypolampra  (Dandy) Figlar were extracted by ultrasonic-assisted extraction and the chemicals were determined by gas chromatography-mass spectroscopy (GC-MS). The major constitutes of  M. sumatrana  var.  glauca  were  trans -cinnamaldehyde (27.55%), caryophyllene (1.20-10.14%), (+)-bulnesol (9.70%), α-caryophyllene (2.35-6.35%), α-eudesmol (1.08-6.17%).  M. hypolampra  was characterized by the presence of safrole (0.18-35.01%), (+) cycloisosativene (18.70%), oxirane, hexadecyl- (0.72-12.79%), β-cubebene (1.53-8.90%), (Z)-14-tricosenyl formate (8.65%). This is the first study of the composition of essential oils from the roots, branches and bark of  M. sumatrana  var.  glauca  and the roots of  M. hypolampra , and some compounds were being described for the first time. Combined with present results and literatures, phytochemicals may be affected by multi-factors such as organs, growing location, and extraction methods, providing more approaches for further exploration of the non-wood resources of forestry species.

natural product research

Analysis of chemical components in two tree species of magnoliaceae,  Magnolia sumatrana  var.  glauca  (Blume) Figlar &amp; Noot and  Magnolia hypolampra  (Dandy) Figlar