Table 1 Changes in peel color of ‘Campbell Early’ grape under simulated export conditions at 0℃

Treatment	Storage period (day)	L value	a value	b value	Chroma	Hue	ΔE
Control	0	22.19±0.11^a1)	1.42±0.50^ab	-0.66±0.11^a	1.62±0.44^ab	331.89± 6.93^a	0.00±0.00^b
	10	22.72±0.40^a	1.41±0.39^ab	-0.70±0.22^a	1.59±0.31^ab	332.58±11.10^a	0.69±0.26^ab
	20	22.71±0.36^a	1.31±0.54^ab	-0.70±0.19^a	1.52±0.42^ab	329.62±14.20^a	0.73±0.28^a
	30	21.86±0.37^a	1.38±0.57^ab	-0.25±0.36^a	1.45±0.51^b	346.05±18.99^a	0.77±0.34^a
SO₂ pad	0	22.19±0.11^a	1.42±0.50^ab	-0.66±0.11^a	1.62±0.44^ab	331.89±6.93^a	0.00±0.00^b
	10	22.61±0.43^a	1.72±0.26^ab	-0.53±0.21^a	1.81±0.18^ab	342.24±9.39^a	0.68±0.19^ab
	20	21.82±0.38^a	1.28±0.06^ab	-0.31±0.28^a	1.34±0.07^b	346.69±11.64^a	0.57±0.38^ab
	30	21.91±0.55^a	2.04±0.36^a	-0.36±0.35^a	2.10±0.32^a	349.41±11.17^a	0.85±0.55^a
SO₂ pad+MA	0	22.19±0.11^a	1.42±0.50^ab	-0.66±0.11^a	1.62±0.44^ab	331.89±6.93^a	0.00±0.00^b
	10	22.79±0.63^a	1.18±0.51^b	-0.64±0.22^a	1.39±0.36^b	328.71±19.35^a	0.85±0.51^a
	20	22.33±1.36^a	1.19±0.21^b	-0.46±0.45^a	1.33±0.13^b	338.90±20.60^a	1.14±0.56^a
	30	21.76±0.36^a	1.49±0.29^ab	-0.43±0.14^a	1.56±0.25^ab	343.15±7.86^a	0.57±0.31^ab

All data are reported as the mean±SD (n=3). The significance levels according to the treatments and storage time were expressed as abc and xyz, respectively. Means with different letters above a bar are significantly different at p<0.05.