Samples | storage time (months) | ||||
---|---|---|---|---|---|
 | 0 | 1 | 3 | 5 | 7 |
 | color density | ||||
1.0% LMP | 11.82 ± 0.88a, A | 11.64 ± 0.62a, A | 11.21 ± 0.77a, A | 10.53 ± 0.86a, A | 10.07 ± 0.77a, A |
0.7% LMP | 11.68 ± 0.83a, A | 11.28 ± 0.78a, A | 10.92 ± 0.80a, A | 10.24 ± 0.78a, A | 9.81 ± 0.78a, A |
0.5% LMP | 11.47 ± 0.64a, A | 11.03 ± 0.68a, A | 10.37 ± 0.62a, A | 9.95 ± 0.70a, A | 9.55 ± 0.82a, A |
0.3% LMP | 11.25 ± 0.81a, A | 10.51 ± 0.86a, A | 10.08 ± 0.83a, A | 9.52 ± 0.65a, A | 9.31 ± 0.73a, A |
Samples | polymeric color | ||||
1.0% LMP | 1.18 ± 0.09a, A | 1.27 ± 0.10a, A | 1.46 ± 0.12a, A | 1.79 ± 0.15b, A | 2.23 ± 0.17c, A |
0.7% LMP | 1.25 ± 0.10a, A | 1.36 ± 0.12a, A | 1.57 ± 0.11a, A | 2.14 ± 0.16b, A | 2.38 ± 0.15c, A |
0.5% LMP | 1.37 ± 0.11a, A | 1.51 ± 0.12a, A | 1.73 ± 0.14a, A | 2.37 ± 0.16b, AB | 2.71 ± 0.18c, AB |
0.3% LMP | 1.55 ± 0.13a, B | 1.73 ± 0.14a, B | 1.97 ± 0.12a, B | 2.71 ± 0.20b, B | 3.12 ± 0.24c, B |
Samples | percent polymeric color (%) | ||||
1.0% LMP | 9.98 ± 0.65a, A | 10.91 ± 0.65a, A | 13.02 ± 0.71b, A | 17.00 ± 0.78c, A | 22.14 ± 1.21d, A |
0.7% LMP | 10.70 ± 0.85a, A | 12.07 ± 0.72a, A | 14.38 ± 0.64b, A | 20.90 ± 1.15c, B | 24.26 ± 1.12d, A |
0.5% LMP | 11.94 ± 0.87a, A | 13.69 ± 0.70a, B | 16.68 ± 0.78b, B | 23.82 ± 0.98c, C | 28.38 ± 1.33d, B |
0.3% LMP | 13.78 ± 1.11a, B | 16.46 ± 0.86a, C | 19.54 ± 0.93b, C | 28.47 ± 1.44c, D | 33.51 ± 1.77d, C |