Study on Volatile Components in the leaves of Taxus chinensis var mairei
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    Abstract:

    With methylene dichloride and diethyl ether being the solvent separately, and with low temperature water bath condensation utilized on simultaneous distillation and solvent extraction (SDE), volatiles of the dry leaves of Taxus chinensis var mairei were extracted and then analyzed on a polar column of DB-WAX by GC/MS. Sixty-three compounds were identified, among which the aliphatic class (60.44%) was the most abundant followed by the aromatic (6.56%), whereas the class of terpenoid was rather less (4.57%). Based on average result by the two extraction solvents, hexadecanoic acid (21.19%), tetradecanoic acid (8.87%), and ethyl linolenate (3.49 %) belonged to the majors. In contrast with what had been reported previously on volatile composition of Taxus chinensis var maire, 34 trace components of low boiling point e.g. hexanal, 2-hexenal, 1-octen-3-ol, 2, 4-heptadienal, benzaldehyde, benzyl alcohol, and acetophenone, which have green, floral, and fruity aroma, should be new identifications. Finally, with 1, 2-dichlorobenzene as internal standard, each compound identified was quantified; the total content of them turned out to be 88.16 礸/g of dry leaves.

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History
  • Received:August 31,2011
  • Revised:August 31,2011
  • Adopted:September 13,2011
  • Online: October 25,2011
  • Published:
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