Chemical composition of five different chemotype essential oils from camphor tree was tested using GC and GC-MS methods.The results indicated that the high content components among the five chemotype of essential oils were linalool(91.98％),camphor(81.25％),borneol(91.88％),trans-nerolidol(52.63％)and eucalyptol(57.73％).Moreover,pancreatic lipase inhibitory activity of different chemotype essential oils was also studied.The pancreatic lipase inhibition activity of essential oils showed that the comparison of chemotype was as follows:trans-nerolidol chemotype＞eucalyptol chemotype＞linalool chemotype＞camphor chemotype＞borneol chemotype.The IC50 value of trans-nerolidol chemotype was(20.02±3.27)mg/mL,and the enzyme inhibition ratio can reach up to 90.17％±1.56％on concentration of 100 mg/mL.
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