Figure 4.

Quantitative analysis of the EAF-PP and AQF-PP and assessment of their activities. (a) Total phenolic, total flavonoid, and total proanthocyanidin contents. (b) DPPH scavenging activity. (c) Hydroxyl scavenging activity. (d) AChE inhibitory activity. (e) BChE inhibitory activity. Activities were expressed as IC₅₀. Data represent as mean ± SD (n = 3). Means with different letters (a-f) differ significantly (P < 0.05). EAF: ethylacetate fraction; AQF: aqueous fraction; CAT: catechin; TPC: total phenolic content; TFC: total flavonoid content; TPAC: total proanthocyanidin content; GAE: gallic acid equivalent; CE: catechin equivalent; AChE: acetylcholinesterase; BChE: butyrylcholinesterase; DON: donepezil; GAL: galantamine; EAF-PP: polyphenols from EAF; AQF-PP: polyphenols from AQF.