Table 7.

The effect of quercetin and naringenin on the amount of malondialdehyde (μmol/g protein) in extended boar spermatozoa (n = 28).

	0 h	24 h	48 h	72 h
Ctrl	4.43 ± 0.71	9.09 ± 0.56	14.69 ± 0.43	20.42 ± 0.25
5 µM/L QUE	4.19 ± 0.65	8.76 ± 0.92	10.48 ± 0.42	18.34 ± 1.18
10 µM/L QUE	4.71 ± 0.30	8.33 ± 0.80	9.85 ± 1.03 *	15.42 ± 1.08 *
25 µM/L QUE	4.26 ± 0.70	7.62 ± 0.35	12.49 ± 1.05	20.69 ± 2.05
50 µM/L QUE	4.49 ± 0.45	10.16 ± 0.49	15.52 ± 1.57	24.19 ± 0.81
5 µM/L NAR	4.65 ± 0.49	8.40 ± 0.38	11.12 ± 0.95	20.11 ± 0.34
10 µM/L NAR	4.26 ± 0.70	7.59 ± 0.31	9.16 ± 0.71 *	14.10 ± 1.62 **
25 µM/L NAR	4.49 ± 0.54	6.85 ± 0.49 *	8.88 ± 0.82 *	13.78 ± 0.86 **
50 µM/L NAR	4.65 ± 0.49	9.33 ± 0.88	12.72 ± 2.62	21.67 ± 1.85

Mean ± S.D. * p < 0.05; ** p < 0.01 in comparison with the control. QUE—quercetin; NAR—naringenin.