超声波强化超临界CO_2反相微乳萃取人参皂苷的研究  

Extraction of Ginsenosides with Ultrasonically Enhanced Supercritical Dioxide Carbon Reverse Microemulsion Extraction

作　　者：罗登林[1] 朱文学[1] 丘泰球[2] 聂英[1] 

机构地区：[1]河南科技大学食品与生物工程学院,河南洛阳471003 [2]华南理工大学轻工与食品学院,广东广州510640

出　　处：《林产化学与工业》2007年第1期93-96,共4页Chemistry and Industry of Forest Products

基　　金：广州市科技计划项目资助(穗科条字[2002]27号);河南科技大学人才科学研究基金资助项目(无编号)

摘　　要：采用自行设计的超声波强化超临界CO2反相微乳(USCRM)萃取设备,以琥珀酸二(2-乙基己基)酯磺酸钠(AOT)为主表面活性剂,乙醇为助表面活性剂,研究了超声波强化AOT/乙醇/超临界CO2反相微乳萃取人参皂苷,分别考察了超声波功率和超声波作用方式的影响。实验发现,每克人参先用0.6mL水浸泡12h后,在萃取压力、温度和时间分别为24MPa、45℃、4h,分离压力和温度分别为5MPa和55℃,CO2流量2L/h条件下,超声波强化AOT/乙醇/超临界CO2反相微乳的人参皂苷萃取率,分别是乙醇超临界CO2萃取和AOT/乙醇/超临界CO2反相微乳萃取的5.28和1.64倍;并且萃取率随超声波功率的增大和超声波作用时间的延长而上升。With the adoption of self-designed ultrasonically enhanced supercritical CO2 reversed microemulsion （USCRM） extraction device, and bis （2-ethylhexyl） sodium sulphosuccinate （AOT） with ethanol as main surfactant and co-surfactant respectively, the extraction of ginsenosides with USCRM was studied, and the effects of ultrasound power and operations were observed. According to the experimental results, 1 g ginseng was soaked 12 h with 0.6 mL water before extraction, extraction pressure 24 MPa, extraction temperature 45℃, extraction time 4 h, separation pressure 5 MPa, separation temperature 55℃, CO2 flow rate 2.0 L/h. The ginsenosides extraction yield with USCRM is 5.28 and 1.64 times of those with ethanol/supercritical CO2 extraction and with AOT/ethanol/ supercritical CO2 reversed microemulsion extraction respectively. The ginsenosides yield is increased with the increases of ultrasound power and ultrasound extraction time.

关 键 词：超声波 超临界CO2反相微乳萃取 琥珀酸二(2-乙基己基)酯磺酸钠 人参皂苷 

分 类 号：TQ91[化学工程] O351.2[理学—流体力学]