Concentrations (mg/g) of total phenols (gallic acid equivalent), total tannins (tannic acid equivalent) and condensed tannin (leucocyanidin equivalent) of A. paniculata leaves before and after flowering phase. *P<0.05; **P<0.01. APBF: A. paniculata leaves before flowering phase; APAF: A. paniculata leaves after flowering phase. 

In vitro gas production of A. paniculata leaves before (o) and after (o) PEG addition. APBF: A. paniculata leaves before flowering phase; APAF: A. paniculata leaves after flowering phase 

Biological activity of tannins in A. paniculata leaves before and after flowering phase. APBF: A. paniculata leaves before flowering phase; APAF: A. paniculata leaves after flowering phase.