LI Rong, WANG Hai-rong, OU Xiao-qun, et al. Optimization of Extraction Process of Four Flavonoids in Scutellariae Radix by Central Composite Design-response Surface Methodology[J]. Chinese journal of experimental traditional medical formulae, 2015, 21(9): 35-38.
LI Rong, WANG Hai-rong, OU Xiao-qun, et al. Optimization of Extraction Process of Four Flavonoids in Scutellariae Radix by Central Composite Design-response Surface Methodology[J]. Chinese journal of experimental traditional medical formulae, 2015, 21(9): 35-38. DOI: 10.13422/j.cnki.syfjx.2015090035.
Objective: To optimize extraction process of four flavonoids in Scutellariae Radix and provide references for control extracts research of thin-layer chromatography of Scutellariae Radix. Method: Effects of ethanol concentration
solvent dosage and extracting time on overall desirability of yields of baicalin
wogonoside
baicalein and wogonin were investigated and forecasted by central composite design-response surface methodology.HPLC was adopted to determine contents of four flavonoids with mobile phase of acetonitrile-0.1% phosphoric acid solution and detection wavelength at 274 nm. Result: Optimal extraction process was as following:extracted twice with 12 times the amount of 54% ethanol for per time of 135 min.Yields of baicalin
wogonoside
baicalein and wogonin were 12.53%
2.77%
0.66%
0.25%
respectively.Bias between the predicted and observed value of overall desirability was 1.19%. Conclusion: This optimized extraction technology is stable and feasible with good prediction.