食品科学 ›› 2009, Vol. 30 ›› Issue (12): 127-130.doi: 10.7506/spkx1002-6630-200912024

• 工艺技术 • 上一篇    下一篇

超临界CO2萃取白首乌中的C21甾苷

吕志敏1,田 鹭1,2,*,朱卫华2   

  1. 1.盐城工学院化学与生物工程学院 2.江苏大学化学化工学院
  • 收稿日期:2008-08-25 修回日期:2009-02-04 出版日期:2009-06-15 发布日期:2010-12-29
  • 通讯作者: 田鹭 E-mail:heron.tian@163.com

Supercritical Carbon Dioxide Extraction of C21 Steroidal Glycosides from Cynanchum bungei Decne. Root

LU Zhi-min1,TIAN Lu1,2,*,ZHU Wei-hua2   

  1. (1. College of Chemistry and Biological Engineering, Yancheng Institute of Technology, Yancheng 224003, China;
    2. College of Chemistry and Chemical Enginerring, Jiangsu University, Zhenjiang 212013, China)
  • Received:2008-08-25 Revised:2009-02-04 Online:2009-06-15 Published:2010-12-29
  • Contact: TIAN Lu1,2,*, E-mail:heron.tian@163.com

摘要:

目的:对白首乌中C21 甾苷超临界CO2 流体萃取工艺参数进行优化。方法:采用L16(45)正交试验,以萃取压力(A)、萃取温度(B)、萃取时间(C)、原料粒度(D)、夹带剂量(E)作为考察因素,每个因素选四个水平,采用2- 去氧糖反应法测定各萃取条件下C21 甾苷的相对含量,以波长590nm 处吸光度为判定依据,确定最优萃取条件。结果:B、D、E 因素对C21 甾苷提取能力的影响最大,C 因素影响最小。结论:最优萃取条件为萃取压力30MPa、萃取时间90min、萃取温度55℃、原料粉碎粒度40 目、夹带剂量2.0ml/g。

关键词: 白首乌, C21甾苷, 超临界CO2萃取, 正交试验

Abstract:

Objective: To optimize the parameters of supercritical CO2 extraction of C21 seroidal glycosides from Cynanchum bungei Decne. root by orthogonal design. Methods: Five affecting factors such as extraction pressure, extraction temperature, extraction duration, particle size of material and 95% ethanol (entrainer) dosage were investigated by single factor test, and each factor was assigned with four levels for orthogonal design. Absorbance at 590 nm was taken to represent C21 seroidal glycoside content as the index to determine the optimal extraction conditions. Results: The Temperature, the particle size of material and the 95% ethanol dosage were the main factors affecting the extraction of C21 steroidal glycosides, while the extraction duration presented the smallest effect. The optimal extraction conditions were as follows: pressure, 30 MPa; particle size of material, 40 mesh; 95% ethanol dosage, 2.0 ml/g; temperature 55 ℃; and extraction duration 90 min.

Key words: Cynanchum bungei Decne. root, C21 steroidal glycosides, supercritical CO2 extraction, orthogonal test

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