表 5. Scavenging rates of aloe-emodin and its complexes on O₂^－ • free radicals ( , n=4) .

芦荟大黄素及其配合物对O₂^－•自由基的清除率（ ，n=4）

Group	Scavenging rate/%
	0.156 mg/L	0.312 mg/L	0.625 mg/L	1.25 mg/L	2.5 mg/L
*P<0.05, vs. aloe-emodin group.
Aloe-emodin	14.2±0.04	19.6±0.05	25.7±0.07	32.6±0.04	39.6±0.02
Aloe-emodin-iron (Ⅱ)	30.2±0.02*	35.6±0.05*	42.5±0.03*	47.4±0.02*	52.7±0.02*
Aloe-emodin-copper (Ⅱ)	32.9±0.08*	38.2±0.03*	46.8±0.02*	52.3±0.06*	58.7±0.01*
Aloe-emodin-magnesium (Ⅱ)	36.4±0.04*	42.1±0.07*	49.2±0.09*	57.3±0.04*	62.8±0.07*