Table 3.

Percent inhibition of acetylcholinesterase by MEC and NBFC.

Compound/Plant	Extract/Fraction	Concentration (µg/mL)	% AChE Inhibition	IC50 (µg/mL)
Galantamine	Standard	1000	95.67 ± 2.52	5.0
		500	87.33 ± 2.52
		250	82.67 ± 3.06
		125	77.00 ± 3.00
Chrozophora tinctoria	MEC	1000	83.33 ± 3.51	40
		500	73.00 ± 3.00
		250	68.33 ± 4.51
		125	61.00 ± 2.00
	NBFC	1000	73.33 ± 3.06	110
		500	65.00 ± 2.65
		250	57.67 ± 2.08
		125	50.33 ± 2.52

Values are expressed as mean ± SEM. Statistical significance was determined using IC₅₀ values through Biostata software. IC₅₀ = half-maximal inhibitory concentration; MEC= methanolic extract of C. tinctoria; AChE = Acetylcholinesterase; NBFC = n-butanol fraction of Chrozophora tinctoria.