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Comparative studies of the essential oils of Magnoliaceae have been examined in previous reports.2~5) In this study, the essential oils of M. liliflora from fresh leaves, branchlets, flowers and flower buds were investigated for the first time using gas chromatographic and mass spectrometric analyses. The yields of steam distilled essential oil were 0.034^0.078% of the fresh leaves, 0.033^0.042% of the branchlets, 0.030% of the flowers, and 0.160% of the flower buds. The weights of the materials used and of the obtained oils, and the yields of oil from the fresh materials are summarized in Table I. The identification of each component in the oil was made by comparing the mass spectra with a collection of literature spectra,6) or with those of authentic samples, and was also checked against the retention times on a gas chromatogram. A total of 88 components positively identified in the 2523

Components of the essential oil of Magnolia liliflora desr.