Determination of the Contents of Total Flavones in Leaves and Branches of Lonicera nuwranthoides in Chongqing

Objective:To determine the contents of total flavones in the leaves and branches of Lonicera nuwranthoides of different ages in Chongqing. Methods:UV spectrophotometry. Results:Abundant flavone substances were found to exist in the leaves and branches of L. nuwranthoides. The leaves contained more flavones than the branches,and the young leaves contained more flavones than the older leaves. Significant differences were observed between the leaves of different ages and branches of different ages in their flavone contents. The content of total flavones was also significantly different between different plants. Conclusion:The leaves and branches of L. nuwranthoides have great value for development and exploitation.