Welcome to Chemistry and Industry of Forest Products,

Chemistry and Industry of Forest Products ›› 2019, Vol. 39 ›› Issue (6): 102-108.doi: 10.3969/j.issn.0253-2417.2019.06.014

Previous Articles     Next Articles

Extraction Technology and Surface Tension Characterization of Gymnocladus chinensis Saponin

Zhexuan LÜ,Weiwei ZHANG,Dandan LIU,Liwei ZHU,Jianxin JIANG*()   

  1. College of Materials Science and Technology, Beijing Forestry University; Engineering Research Center of Forestry Biomass Materials and Energy, Beijing 100083, China
  • Received:2019-06-05 Online:2019-12-28 Published:2019-12-21
  • Contact: Jianxin JIANG E-mail:jiangjx@bjfu.edu.cn
  • Supported by:


The water extraction process of saponins from soap pods was optimized by single factor test and response surface method.The surface activity of saponins was analyzed and the structure of saponins was preliminarily characterized. The optimum extraction conditions were as follows:peel powder of soap pods 2.0 g, temperature 69℃, time 11 h 15 min, and the ratio of liquid to solid is 10:1 (mL:g). Under the above conditions, the yield of saponin is 26.49%. The purified saponins of soap pods were separated by 60% ethanol and 90% ethanol elution. The surface tensions were 47.43 and 35.83 m N/m, respectively. The critical micelle concentrations were 0.35 and 0.75 g/L, respectively. The total sugar content of the hydrolysis was 58.46% and 51.16%, respectively. The monosaccharides in the two kinds of saponins include glucose, xylose, rhamnose and arabinose, but the content of monosaccharide is slightly different. The maximum ultraviolet absorption wavelength of two kinds of saponins was about 470 nm. The infrared spectrum analysis shows that the two kinds of saponins both have the basic characteristic peaks of saponins.

Key words: Gleditsia saponin, water extraction, response surface methodology, surface tension, structural characterization

CLC Number: