摘要
采用单因素和正交实验方法,从萃取压力、萃取温度、萃取时间、夹带剂用量4个因素上对超临界CO_2萃取技术萃取马齿苋中总黄酮进行了研究。结果表明:最佳萃取工艺条件为:压力为30 MPa,温度为45℃,时间为2 h,夹带剂用量4.0 mL/g可使马齿苋中黄酮萃取率达到8.55%;影响萃取率的各因素大小顺序为:压力>夹带剂用量>温度>时间。
By single factor and orthogonal experiment,the supercritical CO2 technology was used to extract flavonids from Portulaca oleracea L.The effects of pressure,temperature,time and dosage of chemical preparation on extractabilities of flavone were studied.The results showed that the best craft conditions were：extraction tressure 30 MPa,extraction temperature 45℃extraction time 2.0 h,dosage of chemical preparation 4.0 mL/g,and the extraction rate was 8.55%. The successive order of different effect factors was extraction pressure〉dosage of chemical preparation〉extraction temperature〉extraction time.
出处
《北方园艺》
CAS
北大核心
2012年第12期45-47,共3页
Northern Horticulture
关键词
马齿苋
超临界CO2
总黄酮
supercritical CO2
Portulaca oleracea L.
flavonids
