Identification of the Components of Philadelphus coronarius L.Essential Oil

摘要

The volatile constituents of both dried and fresh leaves,twigs and flowers of Philadelphus coronarius L.(Hy-drangeaceae)were isolated by hydrodistillation and analyzed by GC/FID and GC/MS.There were major differences between the various oils.For example,epi-13-manool (47.6 %)was the major component of the fresh flower oil,but was not detected in the dried flower oil,whereas isolongifolol (15.5%),2-nonanol (11.1%)and 7-hydroxycoumarin (9.7%)were the principal components of the dried flower oil.In the oils of both the fresh and dried leaves the major constituent was (E,E)-farnesol,although the proportion of this compound in the fresh leaf oil was considerably higher (37.3%)than that of the dried leaf oil (3.2%).(E,E)-farnesol was also the major component of the fresh twig oil (16.6%),but was absent from the dried twig oil,the major constituent of which was (E,E)-2,4-decadienal (2.4%);however,this was not detected in the fresh twig oil.