Protective Effect of Selected Medicinal Plants against Hydrogen Peroxide Induced Oxidative Damage on Biological Substrates

Table 3

Relationship ( value) with the antioxidant effect and polyphenol and flavonoid content of plant extracts in RBC.

	AQ	value	ME	value	80ME	value
Polyphenol; (mg/g)
AnP	63.33 ± 4.71	−0.578	88.33 ± 2.35	0.270	41.66 ± 2.35	0.900
CP	25.00 ± 0	0.725	46.66 ± 4.71	0.882	55.00 ± 0	0.366
CS	55.00 ± 0	0.235	51.66 ± 2.35	0.584	63.33 ± 2.35	0.937
AP	81.66 ± 8.49	0.970	83.33 ± 9.42	0.455	120.00 ± 0	0.790
Flavonoid; (mg/g)
AnP	0.59 ± 0.02	−0.55	1.87 ± 0.07	0.270	0.96 ± 0.11	0.900
CP	0.01 ± 0	0.779	0.59 ± 0.01	0.901	1.09 ± 0.01	0.394
CS	0.16 ± 0.03	0.227	0.04 ± 0	0.659	0.40 ± 0.06	0.931
AP	1.02 ± 0.08	0.970	2.58 ± 0.10	0.455	1.69 ± 0.02	0.790

Aq: aqueous extract; ME: methanol extract; 80ME: 80% methanol extract.
AnP: Andrographis paniculata, CS: Costus speciosus, CP: Canthium parviflorum, and AP: Abrus precatorius. Values are the mean of triplicates ().