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. Author manuscript; available in PMC: 2014 Mar 1.
Published in final edited form as: Nutr Res. 2013 Jan 30;33(3):180–187. doi: 10.1016/j.nutres.2012.12.010

Table 2.

Circulating antioxidant enzymes and plasma antioxidant capacity

Variables Green Tea Control Green tea extract
N 13 12 10
Reduced Glutathione (μg/g Hb)
0 week 1783.11±124.36 1720.41±201.38 1904.55±143.202
8 week 2394.88±471.651, 2 1866.15±127.35 2750.80±426.051, 3
Glutathione peroxidase (mU/mL)
0 week 16.6±5.3 21.5±6.3 19.2±5.5
8 week 18.5±7.2 17.8±5.7 22.5±7.4
Catalase (U/mL)
0 week 31.65±6.52 31.08±6.51 32.08±8.89
8 week 31.53±8.18 36.36±8.46 31.0±7.36
Plasma antioxidant Capacity (μmol/L)
0 week 1.5±0.6 1.4±0.5 1.2±0.4
8 week 2.3±0.51, 3 1.6±0.4 2.5±0.71, 3

Data expressed as means ± standard deviation. Hb; hemoglobin.

1

Significantly different within group at 8 weeks versus baseline (0 week) (p<0.02).

2

Significantly different from control at 0 week, p<0.05.

3

Significantly different from control at 8 week, p<0.01.

P values derived from paired t-test for within-group differences and from multivariate analysis of variance for differences in means across groups at 0 and 8 weeks.