. 2020 Jun 28;58(3):834–843. doi: 10.1007/s13197-020-04597-x

Table 4.

Effect of different levels and sources of zinc on serum antioxidant enzyme levels

Zn source	Zn (ppm)	SOD (U/ml)		Glutathione peroxide (nmol/min/ml)		Catalase (nmol/min/ml)
Zn source	Zn (ppm)	28 day	42 day	28 day	42 day	28 day	42 day
IZ	40	35.9	40.9	6.3	7.1	38.2	40.4
GNZ		55.8	61.9	6.5	7.7	41.3	43.5
MNZ		56.2	61.7	6.5	7.7	41.3	43.5
IZ	60	37.2	43.0	6.3	7.2	38.3	40.6
GNZ		57.1	63.6	6.5	7.8	41.5	43.7
MNZ		57.6	64.1	6.5	7.8	41.6	43.8
IZ	80	39.2	45.0	6.4	7.3	38.8	41.0
GNZ		59.7	65.8	6.6	7.8	41.8	44.0
MNZ		59.1	65.9	6.6	7.8	41.9	44.1
SEM		1.23	1.29	0.19	0.14	0.18	0.13
Zinc levels (ppm)
40		49.3^a	54.8^a	6.4	7.5	40.3^a	42.5^a
60		50.6^ab	56.9^ab	6.5	7.6	40.5^ab	42.7^ab
80		52.6^b	58.9^b	6.5	7.6	40.9^b	43.0^b
Zinc source
IZ		37.4^a	43.0^a	6.3	7.2^a	38.5^a	40.7^a
GNZ		59.5^b	65.8^b	6.6	7.9^b	42.6^b	45.7^b
MNZ		57.6^b	63.9^b	6.6	7.8^b	41.6^b	43.8^b
ANOVA (P values)
Interaction		0.057	0.052	0.137	0.082	0.067	0.083
Zinc levels		0.010	0.018	0.071	0.078	0.021	0.026
Zinc source		<0.000	0.001	0.054	0.017	<0.000	0.006

Values bearing different superscripts within the column differ significantly

SEM standard error of mean, SOD superoxide dismutase, IZ inorganic zinc, GNZ green nano zinc, MNZ market nano zinc