XU Hai-yan, ZHENG Ling-li, DUO Ben-jia, et al. Optimization of Extraction Process for Active Ingredients in by Response Surface Methodology[J]. Chinese journal of experimental traditional medical formulae, 2014, 20(15): 31-34.
XU Hai-yan, ZHENG Ling-li, DUO Ben-jia, et al. Optimization of Extraction Process for Active Ingredients in by Response Surface Methodology[J]. Chinese journal of experimental traditional medical formulae, 2014, 20(15): 31-34. DOI: 10.13422/j.cnki.syfjx.2014150031.
Objective: To optimize ethanol reflux extraction process of oleanolic acid in Gentiana apiata. Method: HPLC was employed to determine the content of oleanolic acid with mobile phase of acetonitrile-methanol-water-phosphoric acid-triethylamine(25:15:10:0.01:0.02) and detection wavelength at 210 nm.On the basis of single factor tests
according to Box-Behnken design principles
response surface analysis was adopted to investigate effects of solid-to-liquid ratio
extraction times and extracting time on yield of oleanolic acid. Result: Optimal extraction conditions were as follows:solid-to-liquid ratio of 1:12
extracted twice
extracting time of 76 min;under these conditions
yield of oleanolic acid was 0.583 mg·g-1
closed to predicted yield of 0.605 mg·g-1. Conclusion: This optimized process was feasible and stable
it had a certain reference value for resource development and clinical promotion of G. apiata.