Table 2. Changes in color (L^* and b^*) of external part of button mushroom with different packaging film during storage at 4, 8, 12, 20℃

Temp. (℃)	Treatment	Color (L^*)			Color (b^*)
Temp. (℃)	Treatment	Days of storage			Days of storage
4		0 12 22			0 12 22
	Control	90.0±1.8¹⁾ ^A ²⁾	87.8±1.2^ABa ³⁾	88.5±1.6^Ba	9.7±0.7^B	14.8±1.4^Aa	14.8±2.6^Ad
	PVC	90.0±1.8^A	83.0±4.7^Bbc	83.0±1.9^Bab	9.7±0.7^B	15.4±4.3^Aa	15.0±1.4^Ad
	OPP1000	90.0±1.8^A	84.6±2.2^Bbc	79.3±1.2^Cc	9.7±0.7^C	15.0±2.8^Ba	17.8±1.1^Ac
	OPP6000	90.0±1.8^A	83.9±2.8^Bbc	75.6±1.9^Cd	9.7±0.7^C	15.6±1.3^Ba	20.2±0.7^Ab
	OPP10000	90.0±1.8^A	82.2±2.4^Bd	74.1±0.9^Ce	9.7±0.7^C	16.0±2.0^Ba	21.2±0.3^Aab
	OPP20000	90.0±1.8^A	86.0±1.8^Bab	72.6±0.4^Cf	9.7±0.7^C	14.2±1.1^Ba	21.6±0.4^Aa
8		0 8 12			0 8 12
	Control	90.0±1.8^A	88.7±1.4^Aa	86.8±1.1^Ba	9.7±0.7^C	13.7±1.3^Bd	16.2±1.6^Ae
	PVC	90.0±1.8^A	87.0±2.0^Bab	87.3±1.0^Ba	9.7±0.7^B	15.0±1.8^Acd	15.8±1.0^Ae
	OPP1000	90.0±1.8^A	86.0±1.6^Bb	81.0±1.9^Cb	9.7±0.7^C	14.9±1.1^Bcd	18.3±2.2^Ad
	OPP6000	90.0±1.8^A	82.7±1.0^Bc	78.0±0.7^Cc	9.7±0.7^C	16.5±0.4^Bb	21.4±1.3^Ac
	OPP10000	90.0±1.8^A	81.2±0.4^Bc	77.7±1.4^Cc	9.7±0.7^C	17.9±0.9^Ba	23.2±0.8^Ab
	OPP20000	90.0±1.8^A	87.5±3.7^Aab	77.2±0.4^Bc	9.7±0.7^C	15.5±1.9^Bbc	24.6±0.8^Aa
12		0 6 8			0 6 8
	Control	90.0±1.8^A	88.7±1.3^Aa	85.7±2.0^Bb	9.7±0.7^B	13.7±2.3^Ac	15.0±1.7^Ab
	PVC	90.0±1.8^A	87.2±2.2^Bb	87.7±1.0^Ba	9.7±0.7^B	15.2±1.6^Ab	14.5±0.9^Ab
	OPP1000	90.0±1.8^A	84.4±0.9^Bc	86.5±1.6^Cb	9.7±0.7^B	15.5±1.1^Ab	14.5±0.9^Ab
	OPP6000	90.0±1.8^A	82.4±1.9^Bd	82.6±1.5^Bc	9.7±0.7^B	16.1±1.2^Ab	15.8±0.8^Ab
	OPP10000	90.0±1.8^A	82.3±1.1^Bd	81.8±1.5^Bc	9.7±0.7^C	16.7±0.8^Bab	18.0±1.3^Aa
	OPP20000	90.0±1.8^A	81.6±1.1^Bd	81.1±1.4^Bc	9.7±0.7^B	18.0±1.0^Aa	18.4±1.4^Aa
20		0 2 3			0 2 3
	Control	90.0±1.8^A	88.7±1.9^Ab	83.5±4.1^Bbc	9.7±0.7^C	12.7±2.5^Bbc	15.1±1.6^Abc
	PVC	90.0±1.8^A	90.7±1.8^Aa	88.6±1.4^Ba	9.7±0.7^C	11.2±1.6^Bc	12.7±1.4^Ad
	OPP1000	90.0±1.8^A	88.6±0.9^Ab	85.3±4.9^Bb	9.7±0.7^B	12.9±0.4^Ab	14.1±2.1^Acd
	OPP6000	90.0±1.8^A	88.2±1.0^Bbc	85.5±1.1^Cb	9.7±0.7^C	12.7±0.9^Bbc	14.0±1.2^Acd
	OPP10000	90.0±1.8^A	86.7±1.5^Bc	82.3±1.5^Cc	9.7±0.7^C	13.8±1.1^Bb	16.4±1.0^Ab
	OPP20000	90.0±1.8^A	81.8±2.5^Bd	78.1±1.2^Cd	9.7±0.7^B	17.6±1.8^Aa	18.9±0.7^Aa

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-dMeans with different alphabets are significantly (p<0.05) different within each treatment.