《Table 4 Recovery of spikedα-terpineol from stout camphor tree essential oil (S2) by the direct inje

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《以香草素为内标之气相层析光谱法定量牛樟木精油指标成分松油醇的快速分析方法（英文）》

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aα-terpineol in stout camphor tree essential oil；b Average of triplicate analyses；c Recovery（%）=（C-A）/B×100%；d Coefficient of variation （CV%）

We used stout camphor essential oil prepared by ether extraction from stout camphor wood as the positive control，and determined theα-terpineol contents in the sample prepared from stout camphor wood，in commercially-available stout camphor essential oil samples，and in Small-flower Camphor essential oil（upper layer）.Using the method developed in this study，theα-terpineol contents in the 14essential oil samples were found to range from 213to 533mg·g-1（Table5）.This finding indicated that theα-terpineol levels in different samples varied，and a difference of 2.5-fold was observed between the highest and the lowest contents.This is in agreement with several previous studies[20-23]，which reported that the components of stout camphor essential oil might vary depending on the which parts of the tree are used as the material to prepare the essential oil.In addition，the age of the tree may also affect the quality of the essential oil.This study alsoconfirmed that essential oil extracted from the small-flower camphor tree did not containα-terpineol.