Table 3.
Fruit skin color of immature (dark green color) and mature (conventional harvest stage of blackish red color) black tomatoes during storage at various temperatures for 20 d.
| Maturity | Storage | Storage period (days) |
||||||
|---|---|---|---|---|---|---|---|---|
| Stages | Temp. | 0 | 2 | 6 | 9 | 13 | 16 | 20 |
| Hunter a∗ value | ||||||||
| Immature | 8 °C | −10.1eC | −6.9dD | −3.7cE | −1.9bE | −0.7abD | 0.5aD | |
| 12 °C | −11.6Bz | −8.8eC | −3.3dC | 2.3bD | 0.5cD | 3.0bC | 5.9aC | |
| 20 °C | −9.1dC | −2.9cC | 3.3bCD | 3.7bC | 4.7abC | 6.8aC | ||
| Mature | 8 °C | 3.9cB | 3.9cB | 4.2cC | 5.9bcB | 6.8bB | 9.2aB | |
| 12 °C | 6.7A | 7.2cA | 8.0cA | 8.9bcB | 10.5abA | 10.5abA | 12.5aA | |
| 20 °C | 7.2bA | 9.3bA | 12.3aA | 12.4aA | 12.0aA | 13.5aA | ||
| Hunter b∗value | ||||||||
| Immature | 8 °C | 20.9aA | 18.2bB | 15.4cBC | 17.6bC | 17.0bB | 17.9bB | |
| 12 °C | 22.7A | 19.5aBC | 16.6bC | 13.6dD | 15.2cD | 14.0dC | 15.2cC | |
| 20 °C | 21.0aA | 17.8bB | 14.6cCD | 14.2cD | 13.9cC | 14.7cC | ||
| Mature | 8 °C | 19.7abAB | 19.4abA | 18.7bA | 19.1abAB | 18.6bA | 20.4aA | |
| 12 °C | 19.1B | 17.2bcD | 16.6cC | 16.0cB | 18.0bBC | 17.0bcB | 19.3aAB | |
| 20 °C | 18.2aCD | 18.6aAB | 18.9aA | 19.7aA | 19.8aA | 19.5aA | ||
| Hunter a∗/b∗ value | ||||||||
| Immature | 8 °C | −0.48eC | −0.38dD | −0.24cC | −0.11bD | −0.04abD | 0.03aD | |
| 12 °C | −0.5B | −0.46eC | −0.20dC | 0.20bB | 0.03cC | 0.21bC | 0.38aC | |
| 20 °C | −0.44dC | −0.16cC | 0.24bB | 0.26bB | 0.33abBC | 0.46aBC | ||
| Mature | 8 °C | 0.20cB | 0.21cB | 0.23cB | 0.30bcB | 0.36bB | 0.46aB | |
| 12 °C | 0.4A | 0.42dA | 0.48cdA | 0.55bcA | 0.58bcA | 0.61bA | 0.66aA | |
| 20 °C | 0.40cA | 0.50bA | 0.65aA | 0.63aA | 0.60abA | 0.68aA | ||
z
Means with the same uppercase letter in the column or same lowercase letter in the row were not significantly different at P < 0.05 with Duncan’s multiple range test.