Comparison of Ultrasonic Method and Continuous Reflux Extraction Process of Total Flavonoids from Radix Astragali
- VernacularTitle:超声法与连续回流法提取黄芪总黄酮的工艺对比研究
- Author:
Fansheng KONG
;
Yongguang BI
;
Aiqun SUN
;
Chunyan YAN
- Publication Type:Journal Article
- Keywords:
Radix Astragali;
Flavonoids;
Ultrasonic method;
Continuous reflux extraction;
Extraction technology
- From:
China Pharmacy
2005;0(19):-
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE:To compare the ultrasound method and continuous reflux extraction process of total flavonoids from Radix Astragali.METHODS:The extraction technology was optimized by orthogonal test with the content of total flavonoids of Radix Astragali as index and with the concentration of ethanol,extraction time,solid-fluid ratio,extraction temperature as factors.RESULTS:Ultrasound extraction process was superior to continuous reflux extraction process.Optimal extraction technology was as follows:the concentration of ethanol of 75%,ultrasonic extraction time of 20 min,solid-liquid ratio of 1:10,ultrasonic extraction temperature of 25 ℃ and extraction rate of 0.325%.CONCLUSION:As compared with continuous reflux extraction process,ultrasonic extraction is fast to operate,solvent saving and high extraction.
