超临界流体CO2萃取杉木心材精油工艺的研究

摘要

Taking extraction rate as an indicate, the extraction technology of Chinese-fir heartwood by supercritical carbon dioxide treatment was studied, and the extraction rate of the SFE-CO2 method was compared to that of traditional extraction method. The results show that when extraction processing condition were: extraction pressure 30MPa, extraction temperature 40℃ extraction time 120 minutes, and flow velocity 20 kg/h, the extraction rate of SFE-CO2was 0.99%, 0.20% more than that of the traditional extraction method. However, taking the cost into consideration, it is proposed that the traditional extraction is used unless there are specific requirements.%以萃取率为指标,对超临界流体CO2萃取杉木心材精油的工艺进行了研究,并将超临界CO2萃取法与传统的精油提取法精油得率进行比较.结果表明:在压力为30 MPa、温度为40℃、萃取时间120 min、CO2流速为20 kg/h时,精油得率最高,为0.99％,比传统提取方法精油得率高0.20％.但从成本方面来考虑,在非特殊要求时,精油提取建议选择传统提取方法.