The Research on Extraction of Chamomile Essential Oil by Molecular Distillation
Abstract: As its anti-inflammatory,antispasmodic,disinfectant and choleretic effect, chamomile has been widely used. In the research, the materials of chamomile was planted inxinjiang，Obtained extract by supercritical carbon dioxide extraction, then Purificati on of Chamomile oil bymolecular distillati on was studied experi mentally . The effects of operating parameters such as feeding rate, feeding temperature, the s peed of thinfil mevaporat or and evaporation temperature on separati on efficiency of Chamomile oil had been discussed in this article. Suitable operatingparameters obtained from the experi mentwere: feeding temperature is 90℃distillati on temperature is 150℃, therate of thinfil mevaporat or is 300 r /min and operating pressure is 3Pa . Through the menti onedmethod, the total recovery ofmore than 23%，and analyzed by gas chromatography and comparie with standard,
Keywords：Chamomile; Chamomile essential oil; Extraction; molecular distillation; extraction; separation
