Control

2.3422^a ± 0.067

1.9900^a ± 0.047

H₂O₂

1.6785^c ± 0.018

1.9273^a ± 0.009

PQ

1.9065^b ± 0.102

3.0169^b ± 0.142

H₂O₂ + PQ

2.2442^a ± 0.011

2.0608^a ± 0.206