Abstract:

In this study, total flavonoids was prepared from raw materials of Senecio cannabifolius Less by using soxhlet extraction and microwave extraction. A single-factor test and an orthogonal experiment were employed to investigate the effect of extraction time and the microwave power on the yields of flavonoids. The optimal extracting conditions were obtained as follows: 2 h of extraction time for soxhlet and 150 s for microwave and the microwave power of 80 W. The Senecio cannabifolius Less contained 0.543% of flavonoids by UV method and the recovery of this analysis was 92.49% and 4.744% for precision while the content of flavonids by TLCS was 0.783% and the recovery was 99.20% and 0.380% for precision test.

Key words: Senecio cannabifolius Less, extraction, flavonoids, TLC, UV