Table 4 Change in VBN of beef during storage (unit: mg%)

Treatment1)	Storage period (day)
	0	1	2	3	4	7	9	11
	Control	6.98±0.27b2)A3)	7.25±0.34bA	8.11±0.55bA	13.61±0.88aA	-	-	-	-
TCS-1	6.98±0.27dA	-	7.44±0.15cA	-	7.36±0.18cdA	7.72±0.16cB	9.03±0.33bB	9.77±0.28aA
TCS-2	6.98±0.27cA	-	7.37±0.16cA	-	7.35±0.19cA	9.20±0.72bA	11.45±0.81aA	-

Control, beef in expandable polystyrene box; TCS-1, beef in box with thermoelectric cooling system and plasma generation apparatus; TCS-2, beef in box with thermoelectric cooling system.
^a-dMeans in the same row with different superscripts are significantly different (p<0.05).
^A-BMeans in the same column with different superscripts are significantly different (p<0.05).