Table 1a.

Effect of NPs on superoxide dismutase, catalase and peroxidase activity from the shoot of the plant.

		Enzyme activity (U/ml)
Enzymes	NPs (%)	24 h	48 h	72 h	96 h
SOD	20	0.002 ± 0.001	0.029 ± 0.002	0.048 ± 0.001	0.059 ± 0.001
	40	0.023 ± 0.001	0.031 ± 0.001	0.057 ± 0.002	0.063 ± 0.002
	60	0.024 ± 0.001	0.033 ± 0.002	0.054 ± 0.001	0.069 ± 0.001
	80	0.028 ± 0.002	0.034 ± 0.002	0.0057 ± 0.003	0.071 ± 0.003
	100	0.031 ± 0.001	0.036 ± 0.001	0.061 ± 0.002	0.074 ± 0.003
CAT	20	0.0129 ± 0.001	0.0120 ± 0.002	0.010 ± 0.002	0.008 ± 0.0006
	40	0.0122 ± 0.002	0.014 ± 0.001	0.009 ± 0.0006	0.007 ± 0.0007
	60	0.0132 ± 0.001	0.017 ± 0.001	0.007 ± 0.0005	0.004 ± 0.0004
	80	0.017 ± 0.001	0.018 ± 0.002	0.004 ± 0.0002	0.005 ± 0.0003
	100	0.013 ± 0.001	0.011 ± 0.001	0.009 ± 0.0006	0.004 ± 0.0002
POD	20	12.8 ± 0.6	18.4 ± 0.9	24.9 ± 1.1	32.1 ± 1.4
	40	13.1 ± 0.7	22.1 ± 1.1	26.1 ± 1.2	34.8 ± 1.2
	60	13.4 ± 0.8	25.2 ± 1.2	27.1 ± 1.3	35.1 ± 1.5
	80	13.9 ± 0.6	26.6 ± 1.1	28.3 ± 1.1	36.9 ± 1.4
	100	15.2 ± 0.5	27.7 ± 1.2	29.8 ± 1.3	39.2 ± 1.6