论文部分内容阅读
[Objective] To optimize the extraction technology of total flavonoids from traditional Chinese medicine Lespedeza virgata(Thunb.) DC.[Method] The extraction technology of total flavonoids from L.virgata was optimized by means of single factor test and orthogonal test.The content of total flavonoids was determined by UV spectrophotometer.[Result] The optimum conditions of extraction were established as follows:40% ethanol,material-solvent ratio 1:8(g/ml) and extracting time 1 h.Under these conditions,the content of total flavonoids was as high as 3.62%.[Conclusion] This extraction technology was low-cost and efficient.
[Objective] To optimize the extraction technology of total flavonoids from traditional Chinese medicine Lespedeza virgata (Thunb.) DC. [Method] The extraction technology of total flavonoids from L. virgata was optimized by means of single factor test and orthogonal test. Content of total flavonoids was determined by UV spectrophotometer. [Result] The optimum conditions of extraction were established as follows: 40% ethanol, material-solvent ratio 1: 8 (g / ml) and extracting time 1 h. Under these conditions, the content of total flavonoids was as high as 3.62%. [Conclusion] This extraction technology was low-cost and efficient.