Objective: To discuss the difference in volatile compositions between Zingeris Rhizoma Recens

Zingiberi Rhizoma and Zingeris Rhizoma Recens processed Magnoliae Officinalis Cortex or Zingiberi Rhizoma processed Magnoliae Officinalis Cortex. Method: GC-MS was applied to determine the volatile oil compositions and contents in Zingeris Rhizoma Recens

Zingiberi Rhizoma

raw Magnoliae Officinalis Cortex

Zingeris Rhizoma Recens processed Magnoliae Officinalis Cortex and Zingiberi Rhizoma processed Magnoliae Officinalis Cortex. Result: Total volatile oil content in Zingiberi Rhizoma was higher than that in Zingeris Rhizoma Recens. Total volatile oil content in Zingiberi Rhizoma processed Magnoliae Officinalis Cortex was also slightly higher than that in Zingeris Rhizoma Recens processed Magnoliae Officinalis Cortex. Nine components were found in Zingeris Rhizoma Recens and 38 components in Zingiberi Rhizoma

4 in common. Sixteen components were found in raw Magnoliae Officinalis Cortex

16 components in Zingeris Rhizoma Recens processed Magnoliae Officinalis Cortex

17 components in Zingiberi Rhizoma processed Magnoliae Officinalis Cortex. Five components were in common among these three. Fourteen components were in common between Zingeris Rhizoma Recens processed Magnoliae Officinalis Cortex and Zingiberi Rhizoma processed Magnoliae Officinalis Cortex. In these 14 common components

the relative mass fraction of 4 components was higher in Zingeris Rhizoma Recens processed Magnoliae Officinalis Cortex than that in Zingiberi Rhizoma processed Magnoliae Officinalis Cortex

but the relative mass fraction in rest components was lower than that in Zingiberi Rhizoma processed Magnoliae Officinalis Cortex. Conclusion: There is difference in volatile oil compositions and contents between Zingeris Rhizoma Recens processed Magnoliae Officinalis Cortex and Zingiberi Rhizoma processed Magnoliae Officinalis Cortex. The results provide a better way to clarify the difference between Zingeris Rhizoma Recens and Zingiberi Rhizoma when they are considered as processing assistants.