The invention belongs to the technical field of
plant extraction, and particularly relates to fokienia hodginsii heartwood
essential oil and an extraction process and application thereof in termite prevention and control. The extraction process of the Fujian
cypress heartwood
essential oil comprises the following steps: mixing Fujian
cypress heartwood
powder, NaCl and water, carrying out ultrasonic treatment, carrying out
steam distillation extraction treatment on the obtained mixture, and collecting an upper oily substance in an extracting solution, so as to obtain the Fujian
cypress heartwood
essential oil, the content of NaCl in the mixture is 8 to 10 weight percent. The key point of the invention is that NaCl with a specific concentration is added when the ultrasonic-assisted
steam distillation extraction process is adopted to extract the essential oil from the Fujian cypress heartwood, so that on one hand, the extraction rate of the Fujian cypress heartwood essential
oil can be improved, and on the other hand, the extraction of some heavy oil components with good
biological activity in the Fujian cypress heartwood is facilitated; therefore, the obtained
centella asiatica heartwood essential oil shows excellent contact killing, repelling and fumigating effects on termites.