Table 5 Changes in color pig small intestine by different packaging methods during cold storage at 4℃

Items	Treatment	Storage days				SEM
		1	4	7	10
CIE L*	AP	66.75	62.11B	64.03A	64.55	0.82
	SP	64.74b	69.61Aa	60.08Bc	61.98c	0.76
	VP	65.44a	62.62Bab	60.57Bb	64.86a	0.59
	SEM	0.61	0.96	0.64	0.91
CIE a*	AP	17.59a	15.26Bb	17.59Aa	16.62a	0.39
	SP	13.41b	12.35Cb	18.11Aa	17.71a	0.47
	VP	13.15c	16.8Aa	15.03Bb	17.99a	0.38
	SEM	0.24	0.43	0.31	0.34
CIE b*	AP	8.01Ac	11.24a	10Ab	9.75Bb	0.26
	SP	8.06Ac	10.5b	9.91Ab	12.31Aa	0.29
	VP	6.61Bc	10.62a	7.96Bb	10.02Ba	0.32
	SEM	0.18	0.25	0.24	0.3

^A,B Means with different superscripts within a same column differ significantly (p<0.05).
^a–c Means with different superscripts within a same row differ significantly (p<0.05).
AP, aero packaging; SP, skin-pack packaging; VP, vacuum packaging.