Table 2.

Anticholinesterase activities of the isolated compounds from Ziziphus oxyphylla.

Compound	Concentrations (μg/mL)	Percent AChE (mean ± SEM)	AChE IC50 (μg/mL)	Percent BChE (mean ± SEM)	BChE IC50 (μg/mL)
V	1000	83.4 ± 0.5∗∗∗	80	83.2 ± 1.1∗∗∗	80
	500	74.1 ± 0.9∗∗∗		72.6 ± 1.3∗∗
	250	65.9 ± 1.4∗∗∗		64.9 ± 0.1∗∗∗
	125	56.1. ± 1.4∗∗		55.9 ± 1.0∗∗
	62.5	48.2 ± 1.4∗∗∗		48.1 ± 1.9∗
VI	1000	80.7 ± 1.1∗∗	90	79.8 ± 1.4∗∗	91
	500	71.2 ± 1.8∗∗		71.1 ± 1.6∗∗
	250	62.1 ± 2.0∗∗		61.4 ± 0.3∗∗∗
	125	54.7. ± 1.6∗∗∗		53.5 ± 1.6∗∗
	62.5	47.2 ± 1.5∗∗∗		47.0 ± 1.1∗∗
VII	1000	80.1 ± 1.2∗∗	89	80.0 ± 1.1∗∗	90
	500	71.5 ± 1.6∗∗		71.1 ± 0.8∗∗
	250	62.3 ± 1.1∗∗		62.1 ± 0.0∗∗∗
	125	54.1. ± 1.2∗∗∗		53.4 ± 1.1∗∗
	62.5	47.8 ± 1.3∗∗∗		47.2 ± 1.2∗∗
Galantamine	1000	92.1 ± 1.0	40	92.0 ± 0.8	43
	500	82.3 ± 1.2		81.8 ± 1.4
	250	73.4 ± 0.5		71.8 ± 1.5
	125	64.2. ± 1.2		64 .0 ± 1.2
	62.5	55.6 ± 2.6		54.1 ± 1.0

Data presented as mean ± SEM; Values differ significantly compared to the positive control, ns: P > 0.05∗: P < 0.05, ∗∗∗: P < 0.001, n = 3.