Table 1. pH and color of electrical or carbon dioxide (CO₂) stunning on small intestines from pork

Traits	Electrical stun	CO2 gas stun	Significantly of T-test
pH	6.98±0.22***	6.55±0.15	<0.001
Color1)
Fresh
L*	61.29±1.23***	57.37±2.04	<0.001
a*	9.82±0.98	11.87±1.56**	0.004
b*	5.97±1.71	7.85±2.60	0.089
C*	11.60±1.17	14.47±1.55***	<0.001
Hue-angle(°)	31.01±7.82	33.05±10.76	0.652
Cooked
L*	67.87±2.06	65.17±3.61	0.071
a*	7.55±1.59	9.25±1.47*	0.030
b*	9.22±0.79	10.80±1.88*	0.032
C*	12.01±0.97	14.37±1.07***	<0.001
Hue-angle(°)	51.08±7.45	49.17±8.56	0.620

All values are mean±SD.
Asterisks indicate the significance of student t-test between stunning condition.
p<0.05;
p<0.01;
p<0.001.
Color: L* refers to lightness, a* to redness, b* to yellowness, C* to chroma, and Hue-angle to the color angle.