8Wan P F, Sheng Z L, Han Q, et al. Enrichment and purifica- tion of total flavonoids fi'om Flos Populi extracts with macro- porous resins and evaluation of antioxidant activities in vitro[J]. J ChromatogrB, 2014, 945-946: 68-74.
9Sheng Z L, Wan P F, Dong C L, et al. Optimization of totalflavonoids content extracted from Flos Populi using response sur- face methodology [ J ]. Ind Crop Prod, 2013, 43 ( 5 ) : 778-786.
10Tham M W, Liew K C. Influence of different extraction temper- atures and methanol solvent percentages on the total phenols and total flavonoids from the heartwood and bark of Acacia auriculi- formis[J]. Eur J Wood Wood Prod, 2014, 72(1): 67-72.
