. 2020 Apr 29;6(4):e03769. doi: 10.1016/j.heliyon.2020.e03769

Table 5.

Color of strawberry samples during storage.

Processing conditions	Storage (day)	L∗		a∗		b∗		TCD (ΔE)
Processing conditions	Storage (day)	4 °C storage	55 °C storage	4 °C storage	55 °C storage	4 °C storage	55 °C storage	4 °C storage	55 °C storage
Control	1	29.41 ± 0.26^FG	-	37.96 ± 0.24^AB	-	22.53 ± 0.18^C	-	0	-
HTST	1	34.31 ± 0.24^A	33.27 ± 0.20^A	38.36 ± 0.54^A	30.59 ± 1.24^A	23.59 ± 0.48^A	20.51 ± 0.08^A	5.13 ± 0.18	8.61 ± 1.54
	15	32.03 ± 0.20^C	24.38 ± 0.41^E	37.53 ± 0.35^AB	16.20 ± 0.82^C	22.97 ± 0.31^BC	19.46 ± 0.51^B	2.77 ± 0.20	22.54 ± 0.78
	36	32.39 ± 0.37^C	22.32 ± 0.13^H	34.71 ± 0.34^DE	14.32 ± 0.072^DEF	20.45 ± 0.35^E	18.55 ± 0.036^C	4.93 ± 0.18	24.99 ± 0.09
HTST (XOS)	1	33.20 ± 0.48^B	32.81 ± 0.37^A	37.45 ± 1.83^B	31.11 ± 1.58^A	23.41 ± 0.83^AB	21.11 ± 0.16^A	4.35 ± 0.72	7.85 ± 1.25
	15	30.88 ± 0.22^D	23.04 ± 0.52^G	37.88 ± 0.20^AB	15.62 ± 0.31^CDE	23.41 ± 0.14^AB	18.42 ± 0.17^C	1.78 ± 0.78	23.58 ± 0.19
	36	31.14 ± 0.17^D	21.11 ± 0.48^I	35.64 ± 0.15^C	13.93 ± 0.017^F	21.49 ± 0.049^D	18.56 ± 0.19^C	3.11 ± 0.11	25.72 ± 0.12
UHT	1	30.68 ± 1.00^D	30.18 ± 0.62^B	33.06 ± 1.22^G	29.09 ± 0.27^B	18.59 ± 0.86^GH	18.22 ± 0.79^C	6.53 ± 1.31	9.93 ± 0.16
	15	29.69 ± 0.25^F	25.49 ± 0.47^D	33.52 ± 0.34^FG	15.77 ± 0.47^CD	19.00 ± 0.17^FG	14.92 ± 1.11^F	5.67 ± 0.32	23.80 ± 0.34
	36	30.23 ± 0.37^E	23.46 ± 0.57^FG	31.45 ± 0.29^H	14.21 ± 0.35^DEF	17.59 ± 0.33^I	16.18 ± 0.40^E	8.22 ± 0.38	25.29 ± 0.55
UHT (XOS)	1	29.09 ± 0.37^GH	28.66 ± 0.25^C	34.86 ± 0.79^CD	30.97 ± 0.48^A	20.08 ± 0.61^E	19.03 ± 0.23^BC	3.98 ± 0.99	7.86 ± 0.40
	15	27.85 ± 0.05^I	24.06 ± 0.06^EF	33.94 ± 0.23^EF	17.08 ± 1.63^C	19.28 ± 0.17^F	17.29 ± 0.13^D	5.39 ± 0.25	22.18 ± 1.50
	36	28.68 ± 0.16^H	21.99 ± 0.12^H	32.05 ± 0.36^H	14.12 ± 0.031^EF	18.35 ± 0.33^H	17.12 ± 0.19^D	7.28 ± 0.48	25.54 ± 0.09

Note: For each L∗ a∗ b∗ column, values followed by different letters indecates different groups according to the ANOVA and Duncan test (p < 0.05) All TCD values are calculated based on Eq. (3).

Differences in total perceivable color can be statistically classified as very distinct (ΔE > 3), distinct (1.5 < ΔE < 3) and small (0.5 < ΔE < 1.5) (Drlange, 1994).