Table 1.
The quality of broccoli ‘Parthenon’ after 30 d of storage at 0–1 °C
| Concentration of 1-MCP (cm3·m−3) | Discoloration/yellowing of crown | Compactness of crown | Rotting | Overall quality of crown | Overall quality of shoot |
|---|---|---|---|---|---|
| 0.0 | 10.0±0.1 a | 9.6±0.4 a | 9.8±0.6 a | 8.8±0.6 a | 7.0±0.0 a |
| 1.0 | 10.0±0.0 a | 9.6±0.5 a | 9.9±0.7 a | 8.9±0.7 a | 7.0±0.0 a |
| 3.0 | 10.0±0.0 a | 9.7±0.4 a | 9.9±0.4 a | 8.9±0.4 a | 7.0±0.0 a |
[i] Values are means of 88 samples ± standard deviation (SD). The differences between means in columns indicated by the same letter do not differ significantly (p<0.05, Tukey test);
[ii] Scoring scales of broccoli crown: discoloration/yellowing: 10 – dark green, 8 – light green, 5 – yellowish-green, 3 – greenish-yellow, 1 – yellow; compactness: 10 – very compact, 8 – very light loss of compactness, 5 – clearly noticeable loss of compactness, 3 – loose head, 1 – very loose head; rotting: 10 – no symptoms, 8 – very minor (1 or 2 very small spots), 5 – small spots but clearly visible, 3 – medium rotting, 1 – completely rotten; overall appearance: 10 – excellent (as freshly harvested), 8 – good, 5 – fair (threshold of commercial suitability), 3 – faulty; 1 – very bad;
[iii] Scored scale of overall appearance for fleshy stalk: 10 – excellent (as freshly harvested), 8 – good, 5 – fair (clearly visible senescence of the petiole scars), 3 – severe senescence, 1 – very severe senescence.
Table 2.
The quality of broccoli ‘Parthenon’ after 60 d of storage at 0–1 °C
| Concentration of 1-MCP (cm3·m−3) | Discoloration/yellowing | Compactness of crown | Rotting | Overall quality of crown | Overall quality of shoot |
|---|---|---|---|---|---|
| 0.0 | 9.4±0.9 b | 9.0±0.5 b | 7.9±2.2 a | 6.5±2.5 a | 5.0±0.1 b |
| 1.0 | 9.9±0.4 a | 9.3±0.5 a | 8.2±2.0 a | 7.0±2.2 a | 6.0±0.1 a |
| 3.0 | 9.9±0.3 a | 9.4±0.5 a | 8.0±2.2 a | 6.8±2.3 a | 6.0±0.0 a |
[i] Values are means of 88 samples ± standard deviation (SD). The differences between means in columns indicated by the same letter do not differ significantly (p<0.05, Tukey test)
[ii] Scored scales – see under Table 1.
Table 3.
Yellowing of broccoli crown during storage at 15 °C after 30 d of cold storage at 0–1 °C
| Concentration of 1-MCP (cm3·m−3) | Shelf life time (d) | ||
|---|---|---|---|
| 2 | 4 | 6 | |
| 0.0 | 10.0±0.0 a | 8.9±1.2 a | 5.1±1.0 b |
| 1.0 | 10.0±0.0 a | 8.9±1.2 a | 6.8±2.1 a |
| 3.0 | 10.0±0.0 a | 9.4±0.8 a | 7.4±1.3 a |
[i] Values are means of 30 samples ± standard deviation (SD). The differences between means in columns indicated by the same letter do not differ significantly (p<0.05, Tukey test)
[ii] Scored scale – see under Table 1
Table 4.
Compactness of broccoli crown during storage at 15 °C after 30 d of cold storage at 0–1 °C
| Concentration of 1-MCP (cm3·m−3) | Shelf life time (d) | ||
|---|---|---|---|
| 2 | 4 | 6 | |
| 0.0 | 9.5±0.3 a | 9.2±0.4 a | 8.5±0.5 a |
| 1.0 | 9.4±0.3 a | 9.1±0.3 a | 8.4±0.5 a |
| 3.0 | 9.5±0.3 a | 9.3±0.4 a | 8.7±0.5 a |
[i] Values are means of 30 samples ± standard deviation (SD). The differences between means in columns indicated by the same letter do not differ significantly (p<0.05, Tukey test)
[ii] Scored scales – see under Table 1
Table 5.
Rotting of broccoli crown during storage at 15 °C after 30 d of cold storage at 0–1 °C
| Concentration of 1-MCP (cm3·m−3) | Shelf life time (d) | ||
|---|---|---|---|
| 2 | 4 | 6 | |
| 0.0 | 9.6±1.1 a | 8.5±1.9 a | 7.9±2.3 a |
| 1.0 | 9.6±0.9 a | 8.6±1.7 a | 7.5±2.3 a |
| 3.0 | 10.0±0.0 a | 9.1±1.2 a | 8.3±2.0 a |
[i] Values are means of 30 samples ± standard deviation (SD). The differences between means in columns indicated by the same letter do not differ significantly (p<0.05, Tukey test)
[ii] Scored scales – see under Table 1
Table 6.
Overall quality of broccoli crown and fleshy stem during storage at 15 °C after 30 d of cold storage at 0–1 °C
| Concentration of 1-MCP (cm3·m−3) | Crown | Fleshy stem | ||||
|---|---|---|---|---|---|---|
| 2 d | 4 d | 6 d | 2 d | 4 d | 6 d | |
| 0.0 | 8.9±0.9 a | 7.2±1.6 a | 3.2±1.6 b | 6.5±0.5 a | 5.5±0.5 b | 3.3± 0.3 c |
| 1.0 | 9.0±2.3 a | 7.2±0.8 a | 4.4±1.9 ab | 6.5±2.7 a | 6.0 ±0.5 a | 3.8± 0.0 b |
| 3.0 | 9.3±0.3 a | 7.7±1.5 a | 5.7±2.2 a | 6.5±0.5 a | 6.0±0.0 a | 4.3± 0.3 a |
[i] Values are means of 30 samples ± standard deviation (SD). The differences between means in columns indicated by the same letter do not differ significantly (p<0.05, Tukey test); Scored scales – see under Table 1
Figure 1.
CO2 generation by broccoli ‘Parthenon’ treated by 1-MCP. Individual markers indicate the average of 4 repetitions (n=4). Vertical lines are standard deviations
Figure 2.
C2H4 generation by broccoli ‘Parthenon’ treated by 1-MCP. Individual markers indicate the average of 4 repetitions (n=4). Vertical lines are standard deviations