ABSTRACT
This study was aimed to acquire the dynamic changes of chlorogenic acid and luteoloside of honeysuckle at different collecting periods in order to decide the best harvesting time of honeysuckle in Donghai County, Jiangsu Province. The content determination method used in the detection of chlorogenic acid and luteoloside of honeysuckle was from the 2010 edition of the Chinese Pharmacopoeia. The skills of HPLC fingerprint characteristic features, and the yield of pressed flowers were combined in the evaluation of honeysuckle at the three-green period, two-white pe-riod, great-white period, silver-flower period and the golden-flower period. The results showed that the content of honeysuckle at different blossoming stages had obvious changes in content of chlorogenic acid and luteoloside, as well as the pressed flower quality and yield of the flower. It was concluded that the optimal harvest time of honey-suckle was for the two-white period and the great-white period, which was consistent with the real origin.