Abstract
The objective of this study was to investigate the effects of storage regime and postharvest 1-methylcyclopropene (1-MCP) treatment timing on softening of ‘Northern Spy’ apples, to determine if ideal firmness for processing could be achieved after storage while at the same time maintaining fruit quality and extending storage life. Over 4 yr of study, ‘Northern Spy’ apples with or without 1-MCP (1 μL L −1 ) were held for up to 12.5 mo at 0 °C–1 °C in the following regimes: (1) controlled atmosphere (CA) with or without 2 wk post-storage ambient air; (2) ambient air or CA; (3) CA with up to 6 mo delayed 1-MCP treatment; (4) delayed CA establishment for up to 4 mo; (5) delayed 1-MCP treatment in combination with delayed CA establishment for 1 or 2 mo. 1-MCP treatment at harvest consistently enhanced firmness retention, which remained too high for processing. Delayed 1-MCP treatment allowed more firmness loss but fruit remained firmer than those not treated, and these apples would be acceptable for subsequent processing (∼67–72 N). 1-MCP-treated fruit developed higher incidence of core browning than those not treated, especially after 6 mo of storage. However, this is not a major problem for processing because core tissue is removed. Delayed CA within any regime did not result in apples with firmness values acceptable for processing, while additional air storage for 2 wk at 0 °C after CA had no significant effect. Overall, delayed 1-MCP treatment with no delay in CA provided the most acceptable apple firmness for processing.
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Claims 6
Claim · model-written summary
Harvest 1-MCP enhanced firmness retention, leaving apples too firm for processing.
- Taxon
- apple
Malus domesticat0 - Treatment
- 1-MCP treatment at harveste0
- Outcome
- firmness retentione0
- Direction
- enhancede0
- Qualifier
- too high for processinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1-MCP treatment at harvest consistently enhanced firmness retention, which remained too high for processing”
t0“apple”
Claim · model-written summary
Delayed 1-MCP permitted greater firmness loss while retaining more firmness than untreated fruit.
- Taxon
- appleMalus domesticat0
- Treatment
- Delayed 1-MCP treatmente0
- Outcome
- firmness losse0
- Direction
- moree0
- Value
- ∼67–72 Ne0
- Comparator
- those not treatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Delayed 1-MCP treatment allowed more firmness loss but fruit remained firmer than those not treated, and these apples would be acceptable for subsequent processing (∼67–72 N)”
t0“apple”
Claim · model-written summary
1-MCP increased core browning incidence, especially after six months.
- Taxon
- appleMalus domesticat0
- Treatment
- 1-MCP-treatede0
- Outcome
- incidence of core browninge0
- Direction
- highere0
- Qualifier
- especially after 6 mo of storagee0
- Comparator
- those not treatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1-MCP-treated fruit developed higher incidence of core browning than those not treated, especially after 6 mo of storage”
t0“apple”
Claim · model-written summary
Delayed CA regimes failed to produce acceptable processing firmness.
- Taxon
- applesMalus domesticae0
- Treatment
- Delayed CAe0
- Outcome
- firmness values acceptable for processinge0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Delayed CA within any regime did not result in apples with firmness values acceptable for processing”
Claim · model-written summary
Two extra weeks of air storage at 0 °C after CA had no significant effect.
- Taxon
- appleMalus domesticat0
- Treatment
- additional air storage for 2 wk at 0 °C after CAe0
- Outcome
- effecte0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“additional air storage for 2 wk at 0 °C after CA had no significant effect”
t0“apple”
Claim · model-written summary
Delayed 1-MCP without delayed CA gave the most acceptable processing firmness.
- Taxon
- appleMalus domesticae0
- Treatment
- delayed 1-MCP treatment with no delay in CAe0
- Outcome
- most acceptable apple firmness for processinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“delayed 1-MCP treatment with no delay in CA provided the most acceptable apple firmness for processing”
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See all 118 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.