Effects of Consumption of Rooibos (Aspalathus linearis) and a Rooibos-Derived Commercial Supplement on Hepatic Tissue Injury by tert-Butyl Hydroperoxide in Wistar Rats

Table 5

Hepatic antioxidant enzyme activity in t-BHP-induced oxidative stress rats consuming the rooibos herbal tea and rooibos-derived commercial supplement.

Antioxidant activity; (µmole/min/µg protein)	Supplement groups
	Fermented rooibos	Unfermented rooibos	Rooibos-derived commercial supplement	Water control
Catalase	0.153 ± 0.06^a	0.179 ± 0.04^a	0.190 ± 0.09^a	0.261 ± 0.13^a
Glutathione peroxidase	0.240 ± 0.06^a	0.233 ± 0.06^a	0.267 ± 0.05^a	0.310 ± 0.19^a
Superoxide dismutase	0.019 ± 0.01^b	0.028 ± 0.01^a	0.024 ± 0.02^a	0.041 ± 0.02^a

Values are expressed as mean ± STD of 10 rats per group. Similar letters in rows denote lack of significant difference (P > 0.05), but if letters differ then P < 0.05.