光果甘草营养器官不同季节总黄酮消长规律的研究

利用紫外分光光度法对二年生栽培光果甘草不同营养器官、不同季节中总黄酮含量的消长规律进行分析研究,以探索光果甘草中总黄酮含量的消长规律,为生产中确定合理的采收期及其采收部位提供依据。结果显示:不同营养器官中,二年生栽培光果甘草总黄酮含量的高低顺序为:上部叶>中部叶>毛状根>水平根茎>侧根>主根、垂直根茎、上部茎>中部茎、下部茎;4～11月,二年生栽培光果甘草总黄酮含量波动较大,6、9、10月含量较高。综合分析表明:叶和毛状根是总黄酮含量最高的部位,二年生栽培光果甘草最佳采收期为早秋;建议对叶采收入药,综合利用光果甘草资源。

Changes of Total Flavonoids Content in Vegetative Organs of Glycyrrhiza glabra L.in Different Seasons

Ultraviolet spectrophotometry(UV) was used to study the changes of the total flavonoids content in vegetative organs of 2-year-old cultivated Glycyrrhiza glabra L.in different seasons.It was shown that the sequence of total flavonoids content from the highest to the lowest was below:upper leaves,middle leaves,hairy root,horizontal rhizome,lateral root,main root,vertical rhizome,upper stem,middle stem and lower stem.It had a great fluctuation from April to November.The higher content was occurred in June,September and October.These results indicated that total flavonoids content was the highest in the parts of the leaf and the hairy root.It was suitable for 2-year-old cultivated G.glabra L.to harvest in early autumn.Therefore,we suggested that the leaf could be harvested for medicine.