An efficient method for the preparative isolation and purification of flavonoid glycosides and caffeoylquinic acid derivatives from leaves of Lonicera japonica Thunb. using high speed counter-current chromatography (HSCCC) and prep-HPLC guided by DPPH-HPLC experiments - Wang, D J; Du, N; Wen, L; Zhu, H; Liu, F; Wang, X; Du, J H; Li, S B (Molecules, 2017)