微波辅助提取玉米须黄酮工艺研究

Study On Microwave-assisted Extraction of Flavonoids from Com Silk

采用单因素分析结合正交试验的方法,研究了微波辅助提取玉米须黄酮的工艺条件,并与加热浸提法进行了比较。结果表明,微波辅助提取玉米须黄酮的最佳工艺条件为:以体积分数50%的乙醇为提取剂,料液比(m:V)1:50,提取温度70℃,提取时间8 min。此条件下,黄酮提取率可达1.13%。与加热浸提法相比,提取时间缩短约9/10,提取率提高约11%。

Microwave-assisted extraction techniques of flavonods from Com Silk were studied by the single factor analysis and orthogonal test. The results showed that the optimum conditions were the concentration of ethanol 50%, the ratio of material to liquid 1：50（m.V）, the extracting temperature 70 ℃ and the extracting times 8 min. The extraction rate of flavonoids was 1.13%. Compared with the tradition water extraction method, the time of microwave-assisted extraction shortens by 9/10 and the extraction rate increases by 11%.