[Study on the chemical constituents of the essential oils from Chrysanthemum indicum collected in Jinyun Mountains, Chongqing].

Objective: To analyse the chemical constituents of essential oils from Chrysanthemum indicum collected in Jinyun Mountains.Methods: The essential oil was extracted by steam distillation and analyzed by GC-MS.Results: The GC chromatogram of the essential oil had 92 peaks among which 69 were identified to be 66 compounds whose relative contents summed to account for 90.07% of the total essential oil. Conclusion: It indicates Chrysanthemum indicum in Jinyun Mountains is good as medicine or for food.The place of origin has obvious influence on the chemical compostions of Chrysanthemum indicum′s essential oil.