% Inhibition and IC50 values of methanolic plant extracts for DPPH scavenging and AChE inhibition assays.

Values are expressed as mean ± SD* (n = 3). IC50 for DPPH scavenging assay of positive controls gallic acid and ascorbic acid were 1±0.13 µg/ml and 2.5±0.18 µg/ml respectively. IC50 for physostigmine control for AChE inhibition assay was 0.075±0.003 µg/ml.所有数值均以平均值±标准差*表示，每组样本量n=3。在DPPH自由基清除试验中，阳性对照没食子酸与抗坏血酸的半数抑制浓度（IC50）分别为1±0.13 µg/ml和2.5±0.18 µg/ml。在乙酰胆碱酯酶（AChE）抑制试验中，阳性对照毒扁豆碱的半数抑制浓度（IC50）为0.075±0.003 µg/ml。