Microwave-assisted extraction of flavonoids from Radix Astragali

文献类型： 外文期刊

第一作者： Xiao, Weihua

作者： Xiao, Weihua;Han, Lujia;Shi, Bo

作者机构：

关键词： Microwave-assisted extraction;Flavonoids;Radix Astragali;Stability

期刊名称：SEPARATION AND PURIFICATION TECHNOLOGY （ 影响因子：7.312； 五年影响因子：6.656 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Microwave-assisted extraction (MAE) technique was developed for the fast extraction of flavonoids from Radix Astragali. Several influential parameters of the MAE procedure (microwave power, extraction cycles, ethanol concentration, extraction temperature, irradiation time, and solvent to material ratio) were studied for the optimization of the extraction protocol. The maximum yield of flavonoids with MAE was obtained by dual extraction with 90% ethanol 25ml/g material at 110 °C for 25min. No degradation of the flavonoids was observed using the developed extraction protocol. The optimal yield with MAE 1.190 ± 0.042 mg/g were close to that of Soxhlet extracted with methanol for 4 h (1.292 ± 0.033 mg/g) and higher than that of ultrasound assisted extraction with methanol for 2 x 30 min and heat reflux extraction with 90% ethanol for 2 x 2 h.

分类号： TQ028

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