Fruit drink samples Months storage periods L* a* b* C* H* BI Δ E A 420nm (NE)
Pear 0 28.09 -1.78 -0.36 1.82 11.43 -10.61 64.41 5.34
1 27.65 -1.52 -0.52 1.61 18.89 -10.53 46.97 5.25
2 25.84 -1.46 -0.91 1.72 31.93 -13.52 25.90 4.80
3 29.09 -1.31 3.18 3.44 67.61 14.45 63.38 4.72
4 27.43 -1.4 1.38 1.97 44.59 2.33 65.08 4.75
5 29.9 -1.11 2.9 3.11 69.06 13.11 62.70 5.14
6 25.57 -1.31 0.32 1.35 13.73 -4.56 66.96 4.44
Cherry 0 0.42 1.69 0.72 1.84 23.08 1041 91.75 0
1 0.78 2.86 1.09 3.06 20.86 805 91.93 0.04
2 0.53 2.1 0.91 2.29 23.43 1048 92.35 0
3 0.26 1.41 0.44 1.48 17.33 955 92.15 0
4 0.48 2.08 0.83 2.24 21.75 1034 92.06 0
5 1.2 3.06 1.67 3.49 28.62 819 91.43 0.05
6 1.25 2.7 1.04 2.89 21.07 458 91.36 0.1
Strawbery 0 16.74 14.4 6.82 15.93 25.34 197.8 77.58 1.73
1 17.38 14.39 7.09 16.04 26.23 194.6 77.12 1.79
2 14.05 13.69 7.43 15.58 28.49 248.7 77.18 1.25
3 16.31 18.32 10.95 21.34 30.87 316.7 79.23 1.24
4 15.94 17.13 10.04 19.86 30.37 295.6 79.29 1.32
5 16.73 17.63 10.78 20.66 31.44 299.4 78.78 1.37
6 17.1 16 9.51 18.61 30.73 254.6 77.90 1.53
Redgrape 0 0.76 2.08 1.3 2.45 32.0 1156 91.79 0
1 1.76 2.24 1.7 2.81 37.2 476 90.93 0.09
2 0.85 2.35 1.46 2.77 31.8 1163 91.33 0
3 0.45 1.83 0.78 1.99 23.1 1056 91.97 0
4 0.3 1.38 0.52 1.47 20.6 1022 92.22 0
5 0.3 1.25 0.51 1.35 22.2 1019 92.26 0
6 2.25 2.13 1.6 2.66 36.9 317 90.05 0.18
Data presented as an average of three replicated samples
(NE)=Non-enzymatic browning
Table 2: Colour characteristics and non-enzymatic browning of some commercial fruit drinks during storage at refrigerator (4°C).