A compound plant essential oil with acaricidal effect, and its preparation method and application? be entitled to
Application number: 20 14 10803565.3? Date of application: 20 14- 12-23.
Abstract: The invention discloses a compound plant essential oil with acaricidal effect, its preparation method and application. The compound plant essential oil is extracted from the following plant combination species: it is composed of green pepper, cacumen Platycladi and Bai Liu bark according to the ratio of 50-60: 20-25: 20-25. The preparation method adopts an ultrasonic-assisted steam distillation extraction process, which is specifically as follows: after all plant components are mixed in proportion, deionized water is added, the material-liquid ratio is 20∶ 1, the ultrasonic power is 240W, the temperature is 55℃, and the ultrasonic vibration extraction is 90min；; Then transferring to a steam distillation device, heating until the system keeps a slightly boiling state, extracting for 3h, and collecting the distilled volatile oil, namely the compound plant essential oil of the invention. The preparation method of the invention is simple and easy to operate, and the volatile oil in the raw materials is partially extracted completely. The in vitro acaricidal experiment of the compound plant essential oil shows that the compound plant essential oil has strong acaricidal effect.