The microwave-assisted extraction of selenium compounds from Cardamine hupingshanensis was optimized by response surface method with selenium content as index.The results showed that the best extraction conditions were microwave extraction for 30 min followed by water bath extraction for 3 h,solid-liquid ratio of 1∶25(g∶mL),extraction temperature of 50℃,and ethanol concentration of 60%.Under this condition,the content of selenium in the extract was 745.159 μg·g-1,and the extraction rate was 95.6%.
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