桂花中总黄酮提取工艺及采收期研究

摘要

Flavonoids in Sweet-scented osmanthus are abundant, and have diversified biological activities.The extraction rate of total flavonoids was determined by orthogonal design and the patterns of dynamic accumulation of total flavonoids in Sweet-scented osmanthus collected from different harvest times were investigated.The results showed the optimum extractions were: A3B3C3D2.There is a fluctuation between the total contents of flavonoids in Sweet-scented osmanthus collected on September 13th and September 22th.The highest yield of total flavonoids was obtained on September 19th.It will provide a reference to the development of Sweet-scented osmanthus.%桂花含有丰富的黄酮,具有多样的药理活性,通过正交试验研究了桂花中总黄酮的提取工艺,并以最佳提取工艺研究了不同采收期桂花中总黄酮的动态变化规律.结果桂花中总黄酮的最佳提取工艺为:乙醇体积分数60％,每次料液比1∶30(g∶ mL),浸提次数3次,浸提时间90 min,黄酮最高含量为16.90％.