Study on Extraction of Flavonoids from Honeysuckle

Flavonoids were extracted from honeysuckle in the alcohol volume fraction.The effects of four factors on the extraction,including alcohol concentration,extraction temperature,extraction times,and material / solvent ratio were studied by single factor test.Based on the single factor experiment,the effects of extraction temperature,alcohol volume fraction,and material/solvent ratio were optimized by orthogonal test.The results showed that the optimum extraction conditions as follows: alcohol volume fraction 60 %,extracting temperature 60 ℃,solid/liquid ratio 1 ∶ 15,extracting time 4 h,the maximumextraction rate was 10.49 %.