Study on Supercritical CO2 extraction of Essential Oil from Elaeagnus angustifolia
The extraction method of volatile oil from Elaeagnus angustifolia L. is generally steam distillation. The steam distillation method is characterized by simple equipment and low cost, but the extraction rate is relatively low, and the process is easy to cause damage to heat instability and easily oxidized components. The quality of the products obtained is not high, which in turn affects the efficacy of the drugs and causes losses to the enterprises.
Compared with the steam distillation method, the supercritical CO2 extraction method has the advantages of less time consumption, high efficiency, and avoidance of pyrolysis and volatilization of volatile oil components, and is suitable for mass production, and is convenient for subsequent preparation of the preparation. Therefore, it can reduce costs, save time and bring greater economic benefits for enterprises.
Recently, the laboratory carried out a pilot study on the industrialization process of supercritical CO2 extraction of volatile oil from Elaeagnus angustifolia L. and achieved staged achievements. The laboratory combines supercritical CO2 fluid technology with other technologies, and through research and development, develops a process route suitable for industrial production of volatile oil from Elaeagnus angustifolia L., thereby effectively improving the quality of volatile oil of Elaeagnus angustifolia L. and reducing the cost. The extraction process is reasonable, the result is reliable, and the repeatability is good, which can provide a basis for the industrial production of volatile oil of Elaeagnus angustifolia.
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