Table 4.
Color degradation (ΔE) of guava juice.
| Sample |
Storage (days) |
||||||
|---|---|---|---|---|---|---|---|
| 0 | 15 | 30 | 45 | 60 | 75 | 90 | |
| S1 | 0j | 4.63 ± 0.08g | 5.79 ± 0.12de | 8.21 ± 0.03de | 9.82 ± 0.14cd | 12.33 ± 0.04b | 14.45 ± 0.18a |
| S2 | 0j | 2.61 ± 0.07hi | 3.76 ± 0.10gh | 4.57 ± 0.04gh | 5.19 ± 0.09fg | 6.11 ± 0.05ef | 7.06 ± 0.12ef |
| S3 | 0j | 3.11 ± 0.33hi | 5.04 ± 0.07fg | 6.07 ± 0.12f | 7.25 ± 0.02de | 8.87 ± 0.15d | 10.13 ± 0.04cd |
| S4 | 0j | 2.06 ± 0.26i | 3.10 ± 0.10hi | 3.79 ± 0.08gh | 5.41 ± 0.18fg | 6.42 ± 0.06ef | 7.15 ± 0.17ef |
| S5 | 0j | 1.02 ± 0.10i | 1.33 ± 0.13i | 1.88 ± 0.05i | 2.33 ± 0.18hi | 3.28 ± 0.12hi | 3.61 ± 0.25gh |
| S6 | 0j | 3.63 ± 0.18gh | 4.81 ± 0.09fg | 5.72 ± 0.10fg | 7.51 ± 0.04e | 9.19 ± 0.02cd | 10.20 ± 0.12c |
| S7 | 0j | 2.18 ± 0.15hi | 3.34 ± 0.05h | 3.92 ± 0.16gh | 5.16 ± 0.09fg | 6.20 ± 0.13fg | 7.08 ± 0.18ef |
| S8 | 0j | 1.34 ± 0.10i | 1.52 ± 0.02i | 1.94 ± 0.12i | 2.47 ± 0.06hi | 3.15 ± 0.19hi | 3.51 ± 0.22gh |
Samples with the same superscripts don't differ at 5 % level of significance. S1 = Juice (without preservative) at RMT; S2 = Juice (without preservative) at RFT (4 °C); S3 = Juice contained KMS 150 ppm; S4 = Juice contained KMS 200 ppm; S5 = Juice contained KMS 250 ppm; S6 = Juice contained Sodium Benzoate 150 ppm; S7 = Juice contained Sodium Benzoate 200 ppm; S8 = Juice contained Sodium Benzoate 250 ppm.