Chemical Components of Essential Oils of Cinnamomum cassia Presl. in Different Growth Year

The essential oils from Cinnamomum cassia Presl. in different growth years are extracted by supercritical fluid extraction (SFE), and the chemical constituents of the essential oils are separated and identified by GC_MS. 60 Peaks are separated and 53 of them are identified. The results showed there are significant difference among the components and contents of essential oil of Cinnamomum cassia Presl. in different growth years.