. 2020 Nov 7;9(11):1093. doi: 10.3390/antiox9111093

Table 5.

Antioxidant enzymes activities in blood cells sediment as well as in blood plasma and selected antioxidant content in blood plasma.

Item	Treatments, g/kg					SEM ^d	p-Value
Item	C	ExpH	ExpA	ExpH+A	ExpCar	SEM ^d	p-Value
Blood cells sediment
CAT, U/mg	272 ^a,b	349 ^b	169 ^a	185 ^a	367 ^b	47.60	0.001
SOD, U/mg	0.156 ^a	0.276 ^b	0.151 ^a	0.196 ^a,b	0.228 ^a,b	0.025	0.023
GPx, U/mg	0.413 ^a	0.516 ^b	0.360 ^a	0.359 ^a	0.357 ^a	0.026	0.006
Blood plasma
SOD [U/mL]	2.34	1.97	2.45	1.98	2.15	0.171	0.173
GPx [U/mL]	1.25	1.16	1.34	1.28	1.37	0.100	0.307
ABTS [mM Trolox/mL]	2.76	2.78	2.70	2.77	2.75	0.359	0.391
DPPH [mM Trolox/mL]	10.5	10.1	10.4	10.4	9.9	0.490	0.103
FRAP [mM Fe/mL]	0.143	0.159	0.150	0.156	0.153	0.004	0.080
Carnosine [µg/g]	143 ^b,c	148 ^b,c	89 ^a	122 ^a,b	167 ^c	14.2	0.001
Anserine [µg/g]	25.1	27.4	22.2	23.1	19.7	2.40	0.421
Sum of dipeptides [µg/g]	168 ^b	175 ^b	111 ^a	145 ^a,b	187 ^b	15.1	0.002

Differences in rows signed with a, b, c significant by p < 0.05; n = 60. ^d SEM, standard error of the mean, C—control diet; ExpH—diet with added L-histidine; ExpA—diet with added β-alanine, ExpH+A—diet with added L-histidine and β-alanine; ExpCar—diet with added carnosine.