Table 3.

The details of the protocol used to measure glutathione peroxidase activity.

Reagents	Test	Control	STD	Blank
Sodium phosphate buffer	1500	1900	1600	2000
Reduced glutathione (2 mM)	200		200
Incubation 10 min
Sample	100	100
The reaction was initiated by adding peroxide:
Peroxide	200		200
Working solution	2000	2000	2000	2000
Sodium acetate solution	100	100	100	100
The test tubes were vortexed, and the absorbance was measured at a wavelength of 570 nm.