Table 3.

NO scavenging activity of different extracts of Periploca aphylla and Ricinus communis.

Plant extract	% RSA at 500 (μg/mL)	IC50 (μg/mL)
Ascorbic acid	80.54	49.98 ± 0.121
PA crude	58.89	143.18 ± 0.49
PA n-hexane	60.58	124.46 ± 0.32
PA chloroform	64.04	103.29 ± 0.52
PA ethyl acetate	61.53	115.07 ± 0.28
PA n-butanol	61.29	113.82 ± 0.43
RC n-hexane	55.10	173.45 ± 0.84
RC chloroform	53.20	231.36 ± 0.91
RC ethyl acetate	63.08	109.77 ± 0.66
RC n-butanol	66.57	92.29 ± 0.72

¹Each value in the table was obtained by calculating the average of three experiments ± standard deviation.