Table 1.

Analysis of variance P-values for each analysis and possible interactions including: aging time (4 d or 20 d), packaging films (impermeable or permeable), frozen storage (0, 2, 4, or 6 mo), and myoglobin oxygenation levels (DeOxy, Oxy, or HiOxy¹).

Analysis	Oxygen Penetration	L*	a*	b*	Oxy-myoglobin, %	Deoxy-myoglobin, %	Met-myoglobin, %	Delta E	Redness ratio2	a*: b* ratio	HA	Discolor-ation	Lipid oxidation
Aging time	0.2241	0.1887	<0.0001	<0.0001	0.0143	0.0059	0.5976	0.0001	<0.0001	0.0002	0.0004	0.0788	0.0183
Frozen storage	<0.0001	<0.0001	<0.0001	<0.0001	<0.0001	<0.0001	<0.0001	<0.0001	<0.0001	<0.0001	<0.0001	0.0240	0.0169
Aging time*frozen storage	<0.0001	<0.0001	0.1695	0.3623	0.2296	0.0009	0.4598	0.0217	<.0001	0.3692	0.5605	0.0267	0.3029
Myoglobin oxygenation level	<0.0001	0.0005	<0.0001	<0.0001	<0.0001	<0.0001	<0.0001	<0.0001	<0.0001	0.0366	0.0918	0.0041	<0.0001
Aging time* myoglobin oxygenation level	0.9457	0.0416	0.0105	0.0299	0.0073	0.2136	0.0003	<0.0001	0.0188	0.2779	0.2257	0.0047	0.0164
Frozen storage* myoglobin oxygenation level	<0.0001	0.0684	<0.0001	<0.0001	0.0002	<0.0001	0.0095	<0.0001	<.0001	0.0244	0.1436	<0.0001	0.0232
Aging time*frozen storage* myoglobin oxygenation level	<0.0001	0.5891	0.0118	0.0833	0.0686	0.4519	0.0188	0.0057	0.7083	0.3134	0.1427	<0.0001	0.0224
Packaging film	<0.0001	0.1940	<0.0001	<0.0001	<0.0001	<0.0001	<0.0001	0.9919	<0.0001	0.8655	0.3633	0.2239	0.0809
Aging time* packaging film	0.3755	0.1145	0.0065	0.0197	0.0130	0.0622	0.0250	0.0559	0.3045	0.7581	0.7983	0.2365	0.7441
Frozen storage* packaging film	0.0619	0.6141	0.6053	0.2105	0.9767	0.0012	<0.0001	0.0047	0.4721	<0.0001	0.0001	0.2177	0.5205
Aging time*frozen storage* packaging film	0.9294	0.9719	0.7482	0.6373	0.6210	0.4275	0.6541	0.0718	0.8872	0.8537	0.7974	0.2399	0.9398
Myoglobin oxygenation level*Pack-aging film	0.0004	0.1602	<0.0001	0.0022	<0.0001	<0.0001	<0.0001	0.1048	0.0280	0.0670	0.1359	0.2444	0.7800
Aging time* myoglobin oxygenation level*pack-aging film	0.6338	0.2556	0.5508	0.8639	0.1624	0.3489	0.0814	0.0787	0.0485	0.5761	0.5372	0.2636	0.9163
Frozen storage* myoglobin oxygenation level*pack-aging film	0.1899	0.4553	0.0882	0.0859	0.1104	0.0025	0.2899	0.5859	0.5406	0.0442	0.2592	0.2042	0.5899
Aging time* frozen storage* myoglobin oxygenation level*pack-aging film	0.5679	0.8708	0.8683	0.8675	0.6511	0.9515	0.3181	0.8133	0.6896	0.7802	0.7405	0.2351	0.5272

¹Deoxygenated = DeOxy, Oxygenated = Oxy, and highly oxygenated = HiOxy.

²Redness ratio—reflectance values for 630 nm ÷ 580 nm.