微波提取莲不同部位黄酮含量的探讨

Study on the Lotus Flavonoids Content from Different Spot Extracted with Microwave Method

[目的]为提高莲的综合利用价值。[方法]以60%乙醇、料液比1∶25、浸提液pH值10、微波功率252 W和时间30 s为工艺条件,对莲各部位进行黄酮提取。[结果]莲各部位提取黄酮含量由高至低分别为:功能叶、嫩叶、老叶、莲蓬、叶脉、叶柄上部、莲芯、蓬柄上部、蓬柄中部、叶柄下部、蓬柄下部。[结论]荷叶与莲蓬中黄酮含量均达到一定水平,可以用于黄酮类物质提取。

[Objective]The research aimed to develop the multipurpose use of lotus.[Method] Extrated the flavonoids from lotus with 60% ethanol density,the material and the fluid compares of 1∶25,the pH value of 10,the microwave power of 252 W and the extration time of 30 s.[Results] The flavonoids content of different spots of lotus differed.And the content of the spots of lotus decreaes in the rank of function leaf〉tender leaf〉old leaf〉lotus seedpod〉vein〉 leaf stalk upper part〉lotus core〉fluffy stem upper part〉fluffy stem central section〉 leaf stalk lower part〉fluffy stem.[Conclusion] The flavonoids content of lotus leaves and seedpots reachs a certain level and can be used for extration of flavonoids.