超临界CO_2萃取天山雪菊工艺研究及成分分析  

Study on Supercritical CO_2 Extraction Technology and Composition Analysis of Coreopsis Tinctoria

作　　者：刘伟[1] 潘晓博[1] 刘继国[1] 刘博奥[1] 祁英[1] 刘玉梅[1] 

机构地区：[1]新疆大学化学化工学院,乌鲁木齐830046

出　　处：《中国食物与营养》2014年第10期55-59,共5页Food and Nutrition in China

基　　金：新疆大学本科生科研实践训练项目(项目编号:XJU-SRT-13034)

摘　　要：采用正交试验法优化了超临界CO2萃取天山雪菊的最佳工艺参数,并采用GC-MS的方法分析了雪菊超临界CO2提取物的成分。结果表明,超临界CO2萃取的最佳工艺条件为温度60℃、压力25MPa、时间1h、CO2流速45L/h;在此条件下,提取收率可达11.59%±0.37%。雪菊超临界CO2提取物的GC-MS分析共定性了50个组分,其中含量最高为正二十二醇(20.33%),其次为正三十一烷(10.99%),上述两种成分均为植物蜡质的主要成分。各组分的总含量高低的顺序依次为高级烷烃28.59%、醇27.12%、游离脂肪酸18.98%、醛酮8.71%、烯烃(包括萜烯类)7.74%、酯4.97%、以及少量的萜烯氧化物0.47%。The extraction technology of Coreopsis tinctoria were determined on the basis of orthogonal experimental by using supercritical CO2extraction,and the extraction was analyzed by GC-MS method.The yields reached about 11.59％ ± 0.37％ by using the optimed process parameters,which were the extraction temperature 60℃,the extraction pressure 25Mpa,the CO2 flow rate 45L/h,and the extraction time 1h.The results of the extraction showed that 50 components were identified by GC-MS,and the highest content was 1-Docosanol,followed by hentriacontane.These two components were the main ingredients of plant waxes.The total content level of each component in order was higher alkanes 28.59％,alcohols 27.12％,free fatty acid 18.98％,aldehydes and ketones 8.71％,alkenes （including terpenes）7.74％,esters 4.97％,and a small amount of terpene oxide 0.47％.

关 键 词：超临界CO2萃取 雪菊 挥发性成分 GC-MS 

分 类 号：TQ028.32[化学工程] R284.2[医药卫生—中药学]