Using Chrysanthemum indici Flos as the material,the essential oil of Chrysanthemum indici was extracted using steam distillation technology.The yield of the essential oil was used as an indicator,and the extraction process was optimized through response surface methodology.The result indicate that:The optimal extraction process conditions are liquid to material ratio of 17(mL/g),degree of pulverization of 0.250 mm(60 mesh),and extraction time of 5.4 hours.After validation experiments,the yield of wild chrysanthemum essential oil was 0.249 9±0.013 1％.This experiment provides a theoretical basis for further research and development of related products of wild chrysanthemum essential oil.
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