Table 1. Changes in the CIE L*, a*, and b* values of fresh-cut lettuce treated with different thymine extract during storage
Storage period(day) | Color value | Treatment1) |
Cont | TEA | TEB | TEC | TED |
0 | L* | 69.50±4.04a2) | 69.50±5.78a | 69.50±2.96a | 69.57±3.86a | 69.41±3.71a |
a* | -1.99±0.38a | -2.03±0.51a | -1.98±0.58a | -1.94±0.44a | -2.11±0.31a |
b* | 4.97±0.97a | 5.13±1.04a | 4.98±1.12a | 5.14±0.97a | 5.03±2.39a |
1 | L* | 68.40±3.96a | 68.46±4.90a | 68.12±5.24a | 68.08±6.63a | 68.41±7.85a |
a* | -2.19±0.80a | -2.20±0.69a | -2.13±0.41a | -2.14±0.31a | -2.03±1.02a |
b* | 4.91±1.72a | 4.99±1.68a | 4.90±1.02a | 4.92±0.82a | 5.06±2.36a |
3 | L* | 64.44±4.95a | 66.00±2.56a | 67.10±1.83a | 67.15±2.56a | 65.60±5.73a |
a* | -2.55±0.76a | -1.20±1.03a | -2.09±0.25a | -1.95±0.72a | -2.24±0.41a |
b* | 6.52±1.57a | 4.84±2.79a | 5.38±0.77a | 5.26±1.31a | 5.67±1.36a |
5 | L* | 59.97±5.27c | 62.96±4.53abc | 65.87±4.62a | 64.00±3.86ab | 60.57±4.61bc |
a* | -1.68±0.75a | -1.74±0.62a | -1.79±0.66a | -1.86±0.46a | -1.94±0.33a |
b* | 5.31±1.52a | 5.16±0.93a | 5.11±1.25a | 4.96±0.69a | 5.11±0.67a |
7 | L* | 58.92±5.62c | 62.30±2.91abc | 65.61±5.66a | 63.20±6.78ab | 61.33±2.25bc |
a* | -0.28±2.19a | -0.36±1.48a | -0.91±1.28a | -0.76±1.58a | -0.16±1.69a |
b* | 10.55±4.42a | 8.86±3.34ab | 7.25±2.98b | 8.48±2.86ab | 10.33±4.33a |
1)Cont, distilled water; TEA, 0.001% (w/v) thyme extract; TEB, 0.005% (w/v) thyme extract; TEC, 0.01% (w/v) thyme extract; TED, 0.05% (w/v) thyme extract.
2)Value represent means±SD (n=15). Different letters in the same row indicate significant statistical difference (p<0.05) by Duncan’s multiple range test.