Study on Extraction Total Flavonoids by Microwave from Astragalus membranaceus(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Study on Extraction Total Flavonoids by Microwave from Astragalus membranaceus

Author(s):: XU Dong-sheng; (Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegertables，Hubei Engineering University，Xiaogan,Hubei 432000）

Abstract:: Taking the Astragalus membranaceus as material and ethanol as solvent to extract total flavonoids with microwave digestion instrument，the optimal condition of extraction was studied through the orthogonal test based on the single factor,total flavonoid content were determinated by spectrophotometry.The results showed the optimal extraction conditions were as follows：ethanol concentration 95％，extraction time 20 minutes，solid to liquid ratio 1∶15 g/mL，temperature 90℃，flavonoids extraction rate was 0.489%，the order of affecting was the temperature>ethanol concentration>solid to liquid ratio>extraction time.

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Last Update: 2015-03-03