Abstract
This study was conducted to investigate the effects of different concentrations (0.5 and 1 µL·L-1) and application times (0.5, 1, 0.5+0.5 and 1+1 µL·L-1) of 1-methylcyclopropene (1-MCP, SmartFreshTM) treatment on post-harvest quality and cell wall metabolism of ‘Summer Prince’ and ‘Summer King’ apple fruit during cold storage. Compared with control fruit, 1-MCP treatments maintained higher flesh firmness and titratable acidity in both apple cultivars. In contrast, the soluble solids content did not show differences in all treatments. The internal ethylene concentration was higher in control fruit, but fruit with 1-MCP treatments expressed lower ethylene concentration. Weight loss in ‘Summer Prince’ fruit treated with 1-MCP was lower than in control fruit during storage. The starch index did not show differences in all treatments; on the other hand, greasiness or other storage disorders were not detected during storage. Both cultivars showed higher contents of total sugar and uronic acid in both 1-MCP treatments than the control. ‘Summer Prince’ apple had increased cell wall degrading enzyme activity of β-Gal, α-Gal, β-Glc, α-Man, and α-Ara enzymes after 4 months of storage in control fruit. Likewise, ‘Summer King’ apple had increased activity of β-Gal, β-Glc, β-Xyl, and α-Ara enzymes after 2 months of storage in the control fruit. Both cultivars showed lower cell wall degrading enzyme activities in 1-MCP treatments than in the control. In conclusion, 1-MCP treatment of ‘Summer Prince’ and ‘Summer King’ apple fruit was effective in maintaining quality by inhibiting internal ethylene and cell wall metabolism. However, the different concentrations and repeated applications of 1-MCP treatment were not different in this study. Therefore, it was suggested that 0.5 µL·L-1 1-MCP treatment could be considered an economically effective concentration for this study.
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Claims 14
Claim · model-written summary
1-MCP maintained higher flesh firmness and titratable acidity.
- Taxon
- apple
Malus domesticae0 - Treatment
- 1-MCP treatmentse0
- Outcome
- flesh firmness and titratable aciditye0
- Direction
- highere0
- Comparator
- control fruite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with control fruit, 1-MCP treatments maintained higher flesh firmness and titratable acidity in both apple cultivars.”
Claim · model-written summary
Soluble solids content did not differ among treatments.
Not reportedTaxon
Verbatim
e0“the soluble solids content did not show differences in all treatments.”
Claim · model-written summary
1-MCP treated fruit had lower ethylene concentration than controls.
Not reportedTaxon
Verbatim
e0“The internal ethylene concentration was higher in control fruit, but fruit with 1-MCP treatments expressed lower ethylene concentration.”
Claim · model-written summary
1-MCP reduced Summer Prince fruit weight loss during storage.
- Material
- ‘Summer Prince’e0
- Treatment
- 1-MCPe0
- Outcome
- Weight losse0
- Direction
- lowere0
- Comparator
- control fruite0
Not reportedTaxon
Verbatim
e0“Weight loss in ‘Summer Prince’ fruit treated with 1-MCP was lower than in control fruit during storage.”
Claim · model-written summary
Starch index did not differ among treatments.
Not reportedTaxon
Verbatim
e0“The starch index did not show differences in all treatments”
Claim · model-written summary
Greasiness and other storage disorders were not detected.
- Outcome
- greasiness or other storage disorderse0
Not reportedTaxonDirection
Verbatim
e0“greasiness or other storage disorders were not detected during storage.”
Claim · model-written summary
Both cultivars had higher total sugar and uronic acid under 1-MCP.
- Treatment
- 1-MCP treatmentse0
- Outcome
- contents of total sugar and uronic acide0
- Direction
- highere0
- Comparator
- the controle0
Not reportedTaxon
Verbatim
e0“Both cultivars showed higher contents of total sugar and uronic acid in both 1-MCP treatments than the control.”
Claim · model-written summary
Summer Prince control fruit showed increased β-Gal, α-Gal, and β-Glc activity after four months.
- Taxon
- appleMalus domesticae0
- Material
- ‘Summer Prince’e0
- Gene
- β-Gal, α-Gal, β-Glce0
- Outcome
- cell wall degrading enzyme activitye0
- Direction
- increasede0
- Qualifier
- after 4 months of storage in control fruite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘Summer Prince’ apple had increased cell wall degrading enzyme activity of β-Gal, α-Gal, β-Glc, α-Man, and α-Ara enzymes after 4 months of storage in control fruit.”
Claim · model-written summary
Summer Prince control fruit showed increased α-Man and α-Ara activity after four months.
- Taxon
- appleMalus domesticae0
- Material
- ‘Summer Prince’e0
- Gene
- α-Man, and α-Arae0
- Outcome
- cell wall degrading enzyme activitye0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘Summer Prince’ apple had increased cell wall degrading enzyme activity of β-Gal, α-Gal, β-Glc, α-Man, and α-Ara enzymes after 4 months of storage in control fruit.”
Claim · model-written summary
Summer King control fruit showed increased β-Gal, β-Glc, and β-Xyl activity after two months.
- Taxon
- appleMalus domesticae0
- Material
- ‘Summer King’e0
- Gene
- β-Gal, β-Glc, β-Xyle0
- Outcome
- activitye0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘Summer King’ apple had increased activity of β-Gal, β-Glc, β-Xyl, and α-Ara enzymes after 2 months of storage in the control fruit.”
Claim · model-written summary
Summer King control fruit showed increased α-Ara activity after two months.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘Summer King’ apple had increased activity of β-Gal, β-Glc, β-Xyl, and α-Ara enzymes after 2 months of storage in the control fruit.”
Claim · model-written summary
Both cultivars had lower cell-wall degrading enzyme activity under 1-MCP.
- Treatment
- 1-MCP treatmentse0
- Outcome
- cell wall degrading enzyme activitiese0
- Direction
- lowere0
- Comparator
- the controle0
Not reportedTaxon
Verbatim
e0“Both cultivars showed lower cell wall degrading enzyme activities in 1-MCP treatments than in the control.”
Claim · model-written summary
Different concentrations and repeated applications of 1-MCP did not differ.
- Treatment
- different concentrations and repeated applications of 1-MCP treatmente0
- Outcome
- were not differente0
- Direction
- not differente0
Not reportedTaxon
Verbatim
e0“the different concentrations and repeated applications of 1-MCP treatment were not different in this study.”
Claim · model-written summary
The authors suggest 0.5 µL·L-1 1-MCP as an economically effective concentration.
Not reportedTaxon
Verbatim
e0“it was suggested that 0.5 µL·L-1 1-MCP treatment could be considered an economically effective concentration for this study.”
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