超临界流体CO_2萃取韭菜籽油的初步研究

Preliminary Studies on Oil Extract from Allium tuberosum Seeds by Supercritical CO_2 Fluid Extraction Methods

运用超临界CO2萃取技术，从韭菜籽中萃取出韭菜籽油，研究韭菜籽粉碎粒度、萃取压力、萃取温度、萃取时间及CO2流量对萃取率的影响。结果表明，韭菜籽粉碎粒度为50～60目，萃取压力为22～25MPa，萃取温度为45℃，萃取时间为2．5h，CO2流量为3．0L/h，该条件下萃取率达17％以上。

The seed oil of Allium tuberosum is extracted by supercritical CO2 fluid extraction, and the result shows that granule sizes 50～60 mesh, extraction pressure 22～25 MPa, extraction temperature 45 ℃, extraction time 2.5 h and CO2 flow rate on the production 3.0 L/h, after investigating the ifluences of above-mentioned three factors on oil yield, which reached above 17% under the feasible operating conditions.