Table 2. Changes in the pH, moisture content, and firmness of the summer kimchi cabbages treated with pallet unit-controlled atmosphere packaging during storage

Qualityparameter	Treatment	Storage period (day)
Qualityparameter	Treatment	0	20	40	60	80
pH	Control	6.14±0.20⁴⁾^A^a⁵⁾	6.14±0.20^A^a	6.12±0.18^A^a	6.06±0.20^A^a	6.10±0.25^A^a
	PUCA 1¹⁾	6.14±0.20^A^a	6.23±0.15^A^a	6.07±0.15^A^a	6.01±0.17^A^a	6.01±0.09^A^a
	PUCA 2²⁾	6.14±0.20^A^a	6.20±0.23^A^a	6.18±0.18^A^a	6.21±0.25^A^a	6.12±0.16^A^a
	PUCA 3³⁾	6.14±0.20^A^a	6.26±0.15^A^a	6.25±0.16^A^a	6.28±0.17^A^a	6.20±0.27^A^a
Moisture content (%)	Control	94.18±0.28^A^a	93.84±0.33^A^a	93.64±0.57^B^a	93.87±0.24^A^a	92.73±0.38^B^b
	PUCA 1	94.18±0.28^A^a	94.11±0.26^A^a	94.68±0.35^A^a	94.26±0.44^A^a	94.24±0.88^A^a
	PUCA 2	94.18±0.28^A^a	94.11±0.90^A^a	95.28±0.22^A^a	94.90±0.80^A^a	94.10±0.50^A^a
	PUCA 3	94.18±0.28^A^a	94.74±0.12^A^a	94.59±0.67^A^a	94.67±0.77^A^a	94.68±0.46^A^a
Firmness (kgf)	Control	0.65±0.06^A^a	0.64±0.05^A^a	0.66±0.08^A^a	0.63±0.06^A^a	0.59±0.10^A^a
	PUCA 1	0.65±0.06^A^a	0.63±0.07^A^a	0.55±0.06^A^a	0.58±0.06^A^a	0.56±0.05^A^a
	PUCA 2	0.65±0.06^A^a	0.62±0.07^A^a	0.58±0.04^A^a	0.56±0.07^A^a	0.55±0.09^A^a
	PUCA 3	0.65±0.06^A^a	0.58±0.05^A^a	0.57±0.04^A^a	0.58±0.07^A^a	0.56±0.08^A^a

¹⁾PUCA 1: 0.5% O₂ + 2% CO₂.
²⁾PUCA 2: 2% O₂ + 2% CO₂.
³⁾PUCA 3: 2% O₂ + 10% CO₂.
⁴⁾Each value is mean±SD.
⁵⁾Mean values in the same column (A-B) or row (a-b) followed by different letters are significantly different according to Duncan’s multiple range test (p<0.05).