Table 2.

Determination of antioxidant properties of the examined Herniaria glabra (HG-PE), H. polygama (HP-PE), and H. incana herb (HIh-PE) purified extracts, based on measurements of thiobarbituric acid-reactive substances (TBARS) and protein thiol groups levels as well as on the ferric reducing ability of blood plasma (FRAP), under the ONOO⁻-induced oxidative stress In Vitro. Statistical significance: ^# p < 0.05, ^## p < 0.001 plasma treated with ONOO⁻ in the absence of examined purified extracts vs. control plasma; * p < 0.05, ** p < 0.01 plasma treated with ONOO⁻ in the absence of examined purified extracts vs. plasma treated with ONOO⁻ in the presence of examined substances.

	(µg/ mL)	TBARS (nmol/mL of Plasma) (n = 9)	Protein-SH Groups (µmol/mL of Plasma) (n = 8)	FRAP (mM Fe2+) (n = 9)
Control (untreated) plasma	0	0.078 ± 0.011	0.335 ± 0.019	0.460 ± 0.035
Plasma treated with ONOO−	0	0.122 ± 0.015 #	0.229 ± 0.029 ##	0.380 ± 0.027 ##
Trolox	1	0.104 ± 0.027	0.267 ± 0.025 *	0.422 ± 0.031
	5	0.108 ± 0.027	0.274 ± 0.029 **	0.462 ± 0.075 **
	50	0.106 ± 0.025	0.288 ± 0.038 **	0.603 ± 0.060 **
HG-PE	1	0.100 ± 0.022 *	0.260 ± 0.026 *	0.418 ± 0.033
	5	0.099 ± 0.023 **	0.268 ± 0.022 **	0.429 ± 0.028 *
	50	0.102 ± 0.022 **	0.262 ± 0.024 **	0.447 ± 0.040 *
HP-PE	1	0.101 ± 0.022 *	0.261 ± 0.023 *	0.428 ± 0.029
	5	0.093 ± 0.019 **	0.264 ± 0.029 *	0.442 ± 0.033 **
	50	0.100 ± 0.026 *	0.258 ± 0.027 *	0.458 ± 0.032 **
HIh-PE	1	0.096 ± 0.026 *	0.258 ± 0.031 *	0.425 ± 0.033
	5	0.101 ± 0.024	0.262 ± 0.024 **	0.440 ± 0.028 *
	50	0.099 ± 0.022 *	0.264 ± 0.025 **	0.485 ± 0.091 **