Abstract
The red colour in apple peel is caused by anthocyanin pigments and is a major part of consumers’ choice of apples. ‘Rome’ apple fruit were bagged with double lined paper bags in the orchard several months before harvest. This prevented any preharvest anthocyanin development. A factorial experiment using 1-methyl cyclopropene (MCP) and storage under fluorescent light at 20°C was conducted on preclimacteric apples. Peel colour, chlorophyll fluorescence and internal ethylene were measured for 28 days after harvest. Light was shown to be absolutely essential for the development of peel anthocyanins. All bagged apples stored in the dark did not develop full colour. Bagged fruit stored in the dark and treated with MCP remained green for the entire experiment whilst those bagged fruit without MCP treatment showed some red colouration and chlorophyll degradation. Bagged apples stored in the light, which did not receive MCP treatment, began to develop colour within one day, where MCP treated fruit produced some colour, but never to the same extent as fruit not treated with MCP. Colour development was also enhanced in control (non-bagged) fruit stored in the light but not those stored in the dark. Further work is continuing on the regulation of anthocyanin production.
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Claims 8
Claim · model-written summary
Preharvest bagging prevented anthocyanin development.
- Taxon
- apple
Malus domesticae1 - Material
- ‘Rome’e1
- Treatment
- bagged with double lined paper bagse1
- Outcome
- preharvest anthocyanin developmente0
- Direction
- preventede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This prevented any preharvest anthocyanin development.”
e1“‘Rome’ apple fruit were bagged with double lined paper bags in the orchard several months before harvest.”
Claim · model-written summary
Light was essential for apple peel anthocyanin development.
Verbatim
e0“Light was shown to be absolutely essential for the development of peel anthocyanins.”
t0“APPLES”
Claim · model-written summary
Bagged apples in darkness did not develop full colour.
- Taxon
- applesMalus domesticae0
- Treatment
- stored in the darke0
- Outcome
- full coloure0
- Direction
- did not develope0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All bagged apples stored in the dark did not develop full colour.”
Claim · model-written summary
Bagged dark stored MCP treated fruit remained green.
- Taxon
- APPLESt0
- Treatment
- treated with MCPe0
- Outcome
- remained greene0
- Qualifier
- stored in the darke0
- Comparator
- without MCP treatmente0
Not reportedDirection
Verbatim
e0“Bagged fruit stored in the dark and treated with MCP remained green for the entire experiment whilst those bagged fruit without MCP treatment showed some red colouration and chlorophyll degradation.”
t0“APPLES”
Claim · model-written summary
Without MCP, bagged dark stored fruit developed some red colouration and chlorophyll degradation.
Verbatim
e0“those bagged fruit without MCP treatment showed some red colouration and chlorophyll degradation.”
t0“APPLES”
Claim · model-written summary
Bagged fruit in light without MCP began colour development within one day.
- Taxon
- applesMalus domesticae0
- Treatment
- did not receive MCP treatmente0
- Outcome
- develop coloure0
- Value
- one daye0
- Qualifier
- stored in the lighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bagged apples stored in the light, which did not receive MCP treatment, began to develop colour within one day”
Claim · model-written summary
MCP treated fruit in light developed less colour than untreated fruit.
Verbatim
e0“MCP treated fruit produced some colour, but never to the same extent as fruit not treated with MCP”
t0“APPLES”
Claim · model-written summary
Light enhanced colour development in non-bagged control fruit, unlike darkness.
Verbatim
e0“Colour development was also enhanced in control (non-bagged) fruit stored in the light but not those stored in the dark.”
The same questions in other papers
1-methylcyclopropene · quality: postharvest · Malus domestica (apple)Results differ
6 papers in the same direction as this paper · 113 in the opposite direction
- positive
- positive
- positive
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See all 120 papers →storage · quality: postharvest · Malus domestica (apple)Positive and negative results
92 papers in the same direction as this paper · 22 in the opposite direction · 3 reporting no difference from an alternative
- negative
- no effect
- negative
114 papers more in this group
See all 118 papers →light · quality: postharvest · Malus domestica (apple)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.