Study on Microwave Extraction Technology of Chlorogenic Acid from Flos Lonicerae

Chlorogenic acids were extracted from Lonicera japonica by microwave oven with ethanol and water as the extraction solvents.The concentration of the chlorogenic acids was detected by UV-vis spectrophotometer with the set wavelength at 324nm.The experiment shows that the optimal extraction conditions of microwave extraction of chlorogenic acid from Flos Lonicerae is: with the concentration of 80% ethanol as extraction solvent,alcohol amount for honeysuckle 4 times amount,microwave treatment time is 60 s,water bath extraction temperature is 70 ℃,the amount of water as extracting honeysuckle 15 times,extraction time 50 min.The results show that the content of chlorogenic acid in Flos Lonicerae is 8.3379 mg·g-1.