Table 2 Hunter ’s color value of different water extracts from bark of U. pumila

	Time (min)	L	a	b
4°C	1	49.81±0.05c**1)	-0.16±0.01a*	2.93±0.02c**
	5	53.89±0.09c*	-1.15±0.03c**	9.87±0.10c*
Room temperature	1	53.39±0.07b**	-0.36±0.01b*	6.41±0.02b**
	5	55.19±0.04a*	-1.06±0.04b**	11.72±0.04b*
80°C	1	55.36±0.61a*	-0.15±0.04a**	13.50±0.53a*
	5	54.05±0.03b**	0.04±0.01a*	13.59±0.06a*

Within the same treatment time and temperature, the values within same column sharing a common letter and asterisk are not significantly different, respectively, p<0.05.