Table 3 The color values of Shepherd’s purse root by freezing and thawing methods

Treatment	Package	Freezing method	Thawing method	Color
				L*	a*	b*	△E
				Raw				55.45±9.59	3.10±1.86	22.50±4.29	-
Blanched				46.65±2.98	0.49±1.24	13.14±2.33	-
Blanched	Air containing package	-20°C	25°C	48.66±3.34	0.49±0.91B	10.97±2.48B	4.85±1.59B
			Running water	46.75±2.32B	0.50±0.75	9.62±2.15B	4.99±2.37B
			Radiofrequency	47.52±3.19B	0.75±0.91B	10.37±2.47B	4.53±2.10B
		-40°C	25°C	48.03±2.53a	0.94±1.11AB	10.97±1.69B	3.95±1.08bB
			Running water	47.62±3.53Bb	0.11±0.98	11.05±3.63B	4.80±1.95aB
			Radiofrequency	49.00±2.95ABb	0.11±0.67B	11.95±3.11B	4.67±1.86aB
		Immersion (-60°C)	25°C	47.47±5.51b	1.53±1.59A	20.83±2.23A	9.62±2.14bA
			Running water	50.16±3.75Aab	1.01±1.53	20.09±2.53A	8.74±3.47cA
			Radiofrequency	50.98±3.88Aa	1.56±1.85A	21.54±2.02A	10.36±2.17aA

Values in the same column with different superscript letters on freezing method were significant differences (p<0.05) by ANOVA with Duncan's multiple rage test.
Values in the same column with different superscript letters on thawing method were significant differences (p<0.05) by ANOVA with Duncan's multiple rage test.