Table 3. Changes in color (L^* and b^*) of internal 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	85.2±2.0¹⁾ ^A ²⁾	82.2±3.3^Aa ³⁾	68.3±3.1^Ba	11.5±0.7^C	15.3±2.2^Bb	22.0±0.7^Ac
	PVC	85.2±2.0^A	78.0±4.2^Bab	64.0±1.6^Cb	11.5±0.7^C	16.8±1.8^Bab	24.4±0.3^Aab
	OPP1000	85.2±2.0^A	73.6±4.9^Bb	60.7±4.4^Cc	11.5±0.7^C	16.7±1.9^Bab	25.2±0.8^Aa
	OPP6000	85.2±2.0^A	70.0±3.8^Bc	64.8±1.9^Cb	11.5±0.7^C	17.7±1.2^Ba	24.0±1.6^Aab
	OPP10000	85.2±2.0^A	74.8±3.7^Bbc	66.5±3.6^Cab	11.5±0.7^C	17.5±1.6^Ba	22.6±0.9^Abc
	OPP20000	85.2±2.0^A	76.7±8.5^Bb	67.0±2.8^Cab	11.5±0.7^C	17.4±1.4^Ba	22.8±1.2^Abc
8		0	8	12	0	8	12
	Control	85.2±2.0^A	85.9±2.8^Aa	79.9±8.5^Bab	11.5±0.7^C	13.6±2.4^Ba	16.4±1.8^Abc
	PVC	85.2±2.0^A	82.9±5.2^Aab	80.2±7.1^Aab	11.5±0.7^B	14.3±2.8^Aa	15.8±2.3^Abc
	OPP1000	85.2±2.0^A	81.8±4.8^Aab	64.4±11.0^Bc	11.5±0.7^B	13.2±1.5^Ba	18.9±2.6^Aa
	OPP6000	85.2±2.0^A	78.1±6.3^ABb	71.1±12.8^Bbc	11.5±0.7^C	15.1±1.3^Ba	17.4±2.5^Aab
	OPP10000	85.2±2.0^A	79.0±6.0^Bb	73.6±4.2^Cb	11.5±0.7^B	15.1±1.7^Aa	16.2±1.1^Abc
	OPP20000	85.2±2.0^A	84.3±2.2^Aa	84.0±3.6^Aa	11.5±0.7^B	13.8±1.2^Aa	14.6±1.6^Ac
12		0	6	8	0	6	8
	Control	85.2±2.0^A	86.9±2.9^Aa	76.9±1.1^Ba	11.5±0.7^B	10.4±2.1^Bb	14.1±0.6^Ac
	PVC	85.2±2.0^A	84.0±5.4^Aab	77.2±0.7^Ba	11.5±0.7^B	10.2±0.8^Bb	14.2±0.7^Ac
	OPP1000	85.2±2.0^A	82.0±5.2^Aab	73.2±1.0^Bb	11.5±0.7^B	12.9±1.5^Ba	17.2±0.6^Aa
	OPP6000	85.2±2.0^A	78.9±6.8^Bc	71.8±2.4^Cb	11.5±0.7^B	12.6±2.1^Ba	17.5±0.8^Aa
	OPP10000	85.2±2.0^A	83.8±4.6^Aab	71.2±3.0^Bb	11.5±0.7^B	10.6±1.8^Bb	16.8±0.5^Ab
	OPP20000	85.2±2.0^A	87.8±2.9^Aa	72.5±1.9^Bb	11.5±0.7^B	10.2±1.4^Bb	16.4±0.6^Ab
20		0	2	3	0	2	3
	Control	85.2±2.0^A	86.3±3.9^Ab	81.1±6.9^Ba	11.5±0.7^B	10.8±0.7^Ba	14.3±2.2^Aa
	PVC	85.2±2.0^A	87.6±2.0^Ab	86.1±3.2^Aa	11.5±0.7^B	9.2±1.8^Cab	14.0±2.5^Aa
	OPP1000	85.2±2.0^A	88.8±2.8^Ab	80.6±6.9^Ba	11.5±0.7^B	8.6±1.2^Cbc	14.8±3.0^Aa
	OPP6000	85.2±2.0^A	86.1±2.4^Ab	73.4±6.0^Bb	11.5±0.7^B	9.8±1.1^Cab	14.8±2.2^Aa
	OPP10000	85.2±2.0^A	87.9±3.0^Ab	82.4±2.5^Ba	11.5±0.7^B	9.5±1.3^Cab	14.3±2.2^Aa
	OPP20000	85.2±2.0^A	91.2±2.6^Aa	85.6±3.4^Ba	11.5±0.7^A	8.1±0.7^Bc	12.2±3.2^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-cMeans with different alphabets are significantly (p<0.05) different within each treatment.