Improvement of Technology to Extract Chlorogenic Acid in Flos Lonicerae

Objective:In order to raise extract ion ratio and reduce solvent waste, the extraction technology of Flos Lonicerae was improved. Methods:First, the Flos Lonicerae was humidified with litt le ethanol-water solution, and then the chlorogenic acid was extracted by boilli ng water with whisk. Results:The extraction ratio of chlorogenic acid was 7.8 9 %. The content of chlorogenic acid was 16.7% in extract. These results were h igher than those of traditional extraction methods, but the wastage of ethanol o nly was 6% of extracting with ethanol. Conclusion:The new technology has available value in extra ction of chlorogenic acid.