Table 1. Changes in firmness (N) of button mushroom with different packaging film during storage at 4, 8, 12, 20℃

Temp. (℃)	Treatment	Days of storage
4		0	12	22
	Control	15.9±3.61) A 2)	15.4±3.8Aa 3)	10.7±4.1Ba
	PVC	15.9±3.6A	14.5±3.9Aa	12.4±3.5Aa
	OPP1000	15.9±3.6A	17.1±6.6Aa	8.8±4.7Ba
	OPP6000	15.9±3.6A	15.9±6.5Aa	13.1±4.7Aa
	OPP10000	15.9±3.6A	15.4±3.4Aa	11.0±3.7Ba
	OPP20000	15.9±3.6A	14.7±4.6Aa	10.2±3.2Ba
8		0	3	6	8	12
	Control	15.9±3.6A	16.0±5.9Aab	13.6±5.6Aa	11.9±4.4Aa	6.6±2.3Bb
	PVC	15.9±3.6A	13.7±5.9ABb	14.2±4.2ABa	11.4±3.5ABa	9.4±3.8Bab
	OPP1000	15.9±3.6AB	20.0±1.4Aa	13.3±2.2BCa	13.8±5.8BCa	11.1±4.3Ca
	OPP6000	15.9±3.6A	16.0±5.7Aab	17.2±4.0Aa	14.0±4.5ABa	7.6±2.2Bb
	OPP10000	15.9±3.6A	14.8±4.9ABb	13.3±5.9ABa	10.4±3.8BCa	7.0±2.3Cb
	OPP20000	15.9±3.6A	15.2±3.8Ab	13.2±2.3Aa	11.8±5.2Aa	6.4±2.3Bb
12		0	3	6	8
	Control	15.9±3.6A	17.2±4.0Aa	11.5±5.0Ba	8.2±2.3Bab
	PVC	15.9±3.6A	16.8±2.6Aa	13.9±5.1Aa	9.6±3.1Bab
	OPP1000	15.9±3.6A	16.2±4.7Aa	10.9±3.8Ba	11.1±4.2Ba
	OPP6000	15.9±3.6A	13.6±4.5Aa	11.4±5.0ABa	7.8±2.8Bab
	OPP10000	15.9±3.6A	16.0±4.8Aa	9.6±5.0Ba	9.0±3.8Bab
	OPP20000	15.9±3.6A	16.0±6.3Aa	10.3±5.5Ba	7.1±3.2Bb
20		0	2	3
	Control	15.9±3.6A	13.9±5.0Aa	12.6±4.2Aa
	PVC	15.9±3.6A	16.3±5.8Aa	14.9±5.3Aa
	OPP1000	15.9±3.6A	16.1±4.4Aa	14.7±5.0Aa
	OPP6000	15.9±3.6A	18.3±5.4Aa	10.3±5.2Ba
	OPP10000	15.9±3.6A	15.0±3.9ABa	11.5±3.1Ba
	OPP20000	15.9±3.6A	16.9±4.6Aa	10.9±4.3Ba

¹⁾Each value represents the means±SD (n=8).
^2)A-CMeans with different alphabets are significantly (p<0.05) different between each treatment for a particular storage time.
^3)a-bMeans with different alphabets are significantly (p<0.05) different within each treatment.