FOOD SCIENCE ›› 2008, Vol. 29 ›› Issue (11): 261-264.

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Study on Extraction Process of Total Saponins from Hetian-jade Jujube

 LI  Li-Hua, CHEN  Jin-Ping   

  1. College of Food Engineering and Nutritional Science,Shaanxi Normal University,Xi an 710062,China
  • Online:2008-11-15 Published:2011-12-08

Abstract: The orthogonal design was used to optimize the extraction process of total saponins from hetian-jade jujube.With spine date seed saponin A as standard compound,vanillin-perchloric acid as chromogenic reagent and glacial acetic acid as solvent,the determination method of the content of total saponins with UV spectrophotometer at 531nm was established.The results showed that the optimal extraction conditions are determined as follows:temperature 70 ℃,ethanol concentratin 80%,ratio of raw material to liquid 1:6 and extraction time 3 h.The content of total saponins in the crude extract from hetian-jade jujube is 6.267 mg/g.

Key words: Hetian-jade jujube, total saponins, extraction technology, spectrophotometry