Essential oil of stems and leaves of Chuzhou chrysanthemum and application thereof

A preparation method of essential oil of stems and leaves of Chuzhou chrysanthemum;

• wherein the preparation method of the essential oil of the stems and leaves of the Chuzhou chrysanthemum comprises the following steps:
• S1:
• taking fresh stems and leaves of the Chuzhou chrysanthemum and crushing the fresh stems and leaves of the Chuzhou chrysanthemum by a crusher;
• wherein conditions of the crushing comprise:
• 18.5 kilowatts (kW) of power and 1400 revolutions per minute (r/min) of rotational speed;
• S2:
• putting the crushed stems and leaves of the Chuzhou chrysanthemum into an extraction kettle, adding deionized water according to a ratio of the crushed stems and leaves to the deionized water of 1:5, sealing the extraction kettle, and connecting a cooling reflux and essential oil collection device to the extraction kettle;
• S3:
• heating the extraction kettle, starting timing when boiling, performing distillation extraction on the extraction kettle for 2.5 hours (h) to end distillation;
• S4:
• standing the extraction kettle for cooling to room temperature, naturally layering the essential oil and water, discharging the water at a lower layer, and collecting the essential oil at an upper layer;
• and
• S5:
• placing the essential oil in a brown bottle, adding anhydrous sodium sulfate to absorb water to obtain the essential oil of the stems and leaves of the Chuzhou chrysanthemum, and storing in a refrigerator at 4° C. for later use;
• and
• wherein main components of the essential oil of the stems and leaves of the Chuzhou chrysanthemum comprise:
• β-selinene accounting for 12.43%, bornan-2-one accounting for 12.13%, camphor accounting for 11.18%, neodihydrotheasperin accounting for 9.73%, γ-amorphene accounting for 6.79%, and β-eudesmol accounting for 6.00%.