. 2021 Nov 1;41(6):923–935. doi: 10.5851/kosfa.2021.e46

Table 4. Correlation of lipid composition, lipolysis and lipid oxidation under different freeze-thaw times and different addition of pork back fat.

	Correlation with the increase of freeze-thaw times				Correlation with different addition of pork back fat
	F₀	F₅₀	F₁₀₀	F₁₅₀	F	C₁	C₂	C₃	C₄	C₅	C₆
Neutral lipid
Free fatty acids	–0.480	–0.546	–0.489	–0.458	–0.577	–0.945	0.185	–0.898	–0.062	–0.906	–0.064
Phospholipids	0.229	0.210	0.194	0.181	–0.776	0.764	–0.802	0.668	–0.456	0.661	–0.089
Total phospholipase	0.376	0.320	0.402	0.185	–0.971^*	–0.990^**	0.335	–0.970^*	0.512	–0.774	–0.005
Acid lipase	0.244	0.115	0.130	0.144	–0.865	–0.978^*	0.370	–0.980^*	0.477	–0.896	0.243
Neutral lipase	0.310	0.125	0.227	0.167	–0.929	–0.962^*	0.574	–0.928	0.560	–0.769	–0.330
Free radical content	–0.469	–0.339	–0.546	–0.437	–0.982^*	–0.995^**	0.519	–0.076	0.691	–0.771	–0.332
Peroxide value	–0.346	–0.067	–0.346	–0.501	–0.846	–0.412	0.906	–0.060	0.064	–0.727	0.898
TBARS	–0.417	–0.326	–0.340	–0.223	–0.708	–0.955^*	0.745	–0.929	0.194	–0.909	0.356
Lipoxygenase	–0.311	–0.230	–0.428	–0.074	–0.493	–0.327	0.788	0.089	0.099	–0.537	0.968^*
Free fatty acids
Phospholipids	–0.964^**	–0.934^**	–0.951^**	–0.957^**	–0.068	–0.933	–0.735	–0.927	–0.860	–0.916	–0.988^*
Total phospholipase	–0.992^**	–0.937^**	–0.926^**	–0.902^**	0.409	0.894	0.898	0.971^*	0.825	0.968^*	0.983^*
Acid lipase	–0.856^*	–0.840^*	–0.821^*	–0.800^*	0.358	0.968^*	0.803	0.964^*	0.847	0.980^*	0.942
Neutral lipase	–0.795^*	–0.820^*	–0.899^**	–0.858^*	0.351	0.987^*	0.902	0.995^**	0.790	0.959^*	0.953^*
Free radical content	0.931^**	0.885^**	0.909^**	0.873^*	0.687	0.911	0.874	0.238	0.620	0.960^*	0.025
Peroxide value	0.747	0.823^*	0.910^**	0.897^**	0.264	0.423	–0.241	0.400	0.083	0.404	0.325
TBARS	0.995^**	0.961^**	0.955^**	0.948^**	0.411	0.997^**	0.439	0.986^*	0.942	0.992^**	0.909
Lipoxygenase	0.926^**	0.914^**	0.928^**	0.904^**	–0.087	0.577	0.106	0.339	0.374	0.222	0.041
Phospholipids
Total phospholipase	0.987^**	0.956^**	0.898^**	0.938^**	0.869	–0.674	–0.778	–0.817	–0.998^**	–0.984^*	–0.980^*
Acid lipase	0.875^**	0.931^**	0.878^**	0.838^*	0.777	–0.834	–0.744	–0.796	–0.999^**	–0.891	–0.977^*
Neutral lipase	0.788^*	0.904^**	0.930^**	0.895^**	0.862	–0.890	–0.944	–0.893	–0.990^**	–0.974^*	–0.900
Free radical content	–0.891^**	–0.889^**	–0.827^*	–0.824^*	0.668	–0.703	–0.890	–0.340	–0.906	–0.975^*	0.027
Peroxide value	–0.725	–0.932^**	–0.900^**	–0.829^*	0.826	–0.383	–0.478	–0.627	–0.107	–0.030	–0.462
TBARS	–0.978^**	–0.983^**	–0.953^**	–0.976^**	0.542	–0.915	–0.782	–0.878	–0.938	–0.900	–0.962^*
Lipoxygenase	–0.933^**	–0.969^**	–0.890^**	–0.976^**	0.675	–0.779	–0.607	–0.650	–0.383	0.113	–0.190
Total phospholipase
Acid lipase	0.894^**	0.895^**	0.839^*	0.824^*	0.944	0.960^*	0.983^*	0.988^*	0.998^**	0.933	0.919
Neutral lipase	0.823^*	0.907^**	0.920^**	0.882^**	0.989^*	0.929	0.931	0.977^*	0.994^**	0.977^*	0.945
Free radical content	–0.906^**	–0.871^*	–0.910^**	–0.872^*	0.944	0.999^**	0.978^*	0.242	0.932	0.979^*	0.170
Peroxide value	–0.710	–0.902^**	–0.860^*	–0.833^*	0.942	0.445	–0.018	0.290	0.137	0.165	0.335
TBARS	–0.998^**	–0.975^**	–0.939^**	–0.916^**	0.795	0.905	0.751	0.991^**	0.926	0.962^*	0.915
Lipoxygenase	–0.952^**	–0.963^**	–0.912^**	–0.920^**	0.449	0.245	–0.019	0.155	0.404	–0.011	0.058
Acid lipase
Neutral lipase	0.961^**	0.979^**	0.972^**	0.990^**	0.981^*	0.994^**	0.886	0.983^*	0.994^**	0.966^*	0.795
Free radical content	–0.642	–0.673	–0.587	–0.516	0.880	0.967^*	0.961^*	0.091	0.906	0.966^*	–0.212
Peroxide value	–0.330	–0.994^**	–0.775^*	–0.613	0.995^**	0.563	0.069	0.170	0.084	0.479	0.617
TBARS	–0.879^**	–0.869^*	–0.752	–0.717	0.944	0.961^*	0.832	0.967^*	0.927	0.949	0.986^*
Lipoxygenase	–0.973^**	–0.887^**	–0.756^*	–0.815^*	0.156	0.505	–0.077	0.075	0.360	0.345	0.367
Neutral lipase
Free radical content	–0.601	–0.676	–0.728	–0.617	0.914	0.941	0.979^*	0.149	0.917	1.000^**	0.246
Peroxide value	–0.253	–0.967^**	–0.861^*	–0.675	0.982^*	0.541	0.193	0.302	0.043	0.238	0.031
TBARS	–0.810^*	–0.852^*	–0.853^*	–0.791^*	0.864	0.978^*	0.749	0.979^*	0.883	0.928	0.752
Lipoxygenase	–0.901^**	–0.864^*	–0.863^*	–0.882^**	0.344	0.573	0.344	0.246	0.309	0.113	–0.255
Free radical content
Peroxide value	0.893^**	0.672	0.836^*	0.922^**	0.845	0.437	0.167	0.873	0.386	0.238	–0.501
TBARS	0.919^**	0.938^**	0.953^**	0.897^**	0.780	0.922	0.820	0.328	0.832	0.930	–0.134
Lipoxygenase	0.739	0.871^*	0.901^**	0.780^*	0.329	0.270	0.180	0.627	0.584	0.111	–0.535
Peroxide value
TBARS	0.721	0.872^*	0.910^**	0.894^**	0.921	0.359	0.595	0.410	0.317	0.380	0.682
Lipoxygenase	0.494	0.895^**	0.987^**	0.716	0.203	0.645	0.682	0.922	0.954^*	0.955^*	0.958^*
TBARS
Lipoxygenase	0.944^**	0.973^**	0.936^**	0.934^**	–0.176	0.515	0.211	0.285	0.588	0.170	0.446

p<0.05,

^**

p<0.01.

TBARS, thiobarbituric acid reactive substances.