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

Table 1

Phytochemical composition of selected medicinal plants.

Phytochemicals	AnP	CS	CP	AP
Polyphenols^*	3.21 ± 0.10^b	3.21 ± 0.12^b	1.28 ± 0.32^a	1.06 ± 0.06^a
Flavonoids^**	1.50 ± 0.16^a	1.17 ± 0.42^a	2.44 ± 0.81^b	1.32 ± 0.08^a
Glutathione^***	824 ± 28.84^c	285.6 ± 33^a	311.55 ± 25^ab	375 ± 76.77^b
α-Tocopherol^**	NA	90.9 ± 3.29^b	164.6 ± 22.10^c	36.6 ± 3.05^a
Tannins^**	846 ± 0.15^b	1088 ± 0.03^c	605 ± 0.02^a	1160 ± 0.07^c
β-Carotene^****	ND	1377 ± 2.51^b	1060 ± 0.6^a	1260 ± 0.05^b
Alkaloids^**	44.6 ± 6.65^a	120 ± 0.03^b	400 ± 0.06^c	1100 ± 0.03^d
Total sap.^**	0.300^c	0.282 ± 0.04^bc	0.200 ± 0.04^a	0.244 ± 0.01^ab
Steroidal sap.^**	0.110^a	0.238 ± 0.038^c	0.148 ± 0.051^ab	0.186 ± 0.028^b
Vitamin C^*	ND	0.0237 ± 0.00^a	0.0228 ± 0.00^a	0.643 ± 0.04^b

AnP: Andrographis paniculata, CS: Costus speciosus, CP: Canthium parviflorum, and AP: Abrus precatorius; ^*g/100 g, ^**mg/100 g, and ^***mmol/100 g, ^****μg/100 g dry basis. ND: not detected, sap.: saponins, and NA: not analyzed. Mean values with different superscripts a, b, c and d in rows, differ significantly ( ≤ 0.05).