Optimization of Ethanol Extraction Technology of Xinnaosu Granules by Central Composite Design-response Surface Methodology and Principal Component Analysis
LI Shan-shan, ZHANG Yong-mei, JIANG Zhi-tao, et al. Optimization of Ethanol Extraction Technology of Xinnaosu Granules by Central Composite Design-response Surface Methodology and Principal Component Analysis[J]. Chinese journal of experimental traditional medical formulae, 2016, 22(4): 15-19.
LI Shan-shan, ZHANG Yong-mei, JIANG Zhi-tao, et al. Optimization of Ethanol Extraction Technology of Xinnaosu Granules by Central Composite Design-response Surface Methodology and Principal Component Analysis[J]. Chinese journal of experimental traditional medical formulae, 2016, 22(4): 15-19. DOI: 10.13422/j.cnki.syfjx.2016040015.
Objective: To optimize ethanol extraction technology of Xinnaosu granules and provide a reference for molding technology of this preparation. Method: Based on single factor tests
taking overall desirability of extracting amounts of tanshinone ⅡA and cryptotanshinone
activity of anti-thrombin as index
ethanol concentration
the amount of ethanol and extraction time were selected by central composite design-response surface methodology
extraction technology was analyzed and verified by principal component analysis. HPLC was adopted to determine contents of tanshinone ⅡA and cryptotanshinone with isocratic elution of methanol-water (75 : 25) and detection wavelength at 270 nm. Result: Optimum extraction process conditions was as follows:extracted 120 min with 8 times the amount of 70% ethanol.Extracting amounts of tanshinone ⅡA and cryptotanshinone were 0.523
0.225 mg · g-1
activity of anti-thrombin was 92.599 U · g-1.Overall desirability deviated 2.9% by comparing with the predictive value. Conclusion: This optimized process is simple and reliable with high predictability
which can lay foundation for molding technology of Xinnaosu granules.