食品科学 ›› 2005, Vol. 26 ›› Issue (9): 207-210.

• 工艺技术 • 上一篇    下一篇

高压湿法萃取大豆异黄酮的工艺研究

 李长彪, 赵秀红, 刘长江, 张春红, 孟宪军   

  1. 沈阳农业大学食品学院
  • 出版日期:2005-09-15 发布日期:2011-09-20

Sdudy on the Pressurized Liquid Extraction of Isoflavones from Soybeans

 LI  Chang-Biao, ZHAO  Xiu-Hong, LIU  Chang-Jiang, ZHANG  Chun-Hong, MENG  Xian-Jun   

  1. College of Food, Shenyang Agricultural University
  • Online:2005-09-15 Published:2011-09-20

摘要: 用高压湿法萃取方法(PLE)从冷冻干燥的大豆提取大豆异黄酮并用高效液相检测,对不同溶剂、温度、压力等影响因素进行实验,确立最佳提取方案,并对PLE过程中异黄酮的稳定性进行研究。结果表明:当100℃,100个标准大气压,3个稳定的萃取周期(7min),70%的乙醇作为萃取溶剂,提取率最高为93%;温度高于100℃异黄酮游离型糖苷发生降解,温度高于150℃结合型糖苷发生分解。

关键词: 高压湿法萃取, 异黄酮, 稳定性, 大豆

Abstract: Isoflavone derivatives from freeze-dried soybeans were extracted by pressurized liquid extraction (PLE) and determined by reverse-phase high performance liquid chromatography (HPLC) .At the same time ,carry through experiment forinfluence factor about several extraction solvents , temperatures, pressures, etc.as well as establish the optimization of the extraction protocol: 0.1 g of sample, 100℃, three (7min) static extraction cycles and ethanol 70% as extracting solvent. the most rate of picking-up is 93% .The stability of the isoflavones during the PLE was also determined. Indication: degradation of malonyl glucoside forms of the isoflavones takes place using temperatures higher than 100 ℃ whereas degradation of glucosides takes place above 150℃

Key words: liquid extraction, isoflavone, stability, soybean