Abstract
Metabolism of peel constituents was assessed during ripening of `Delicious' and `Golden Delicious' apples. The ethylene action inhibitor 1-methylcyclopropene (1-MCP) and/or controlled atmosphere storage (CA) were used to limit ethylene activity during and after storage at 1 °C. `Delicious' apples not exposed to 1-MCP developed a brownish discoloration (not superficial scald) during the initial 2 months of storage in air. LC/MS analyses of peel components indicated 1-MCP and/or CA inhibited the degradation of compounds responsible for red peel color (i.e., idaein) as well as other flavonoids. Ethylene regulation of metabolism of other phenolic and related constituents including (-)epicatechin and chlorogenic acid appears to be compound specific. The (-)epicatechin content is not impacted by 1-MCP or CA, while chlorogenic acid accumulation is reduced in fruit exposed to 1-MCP and/or stored in CA. β-carotene and lutein content in peel of `Delicious' fruit stored in air was lower compared with untreated controls. Chlorophyll degradation was enhanced in air-stored fruit previously exposed to 1-MCP; however, this result was not observed in 1-MCP exposed fruit from CA. Results for `Golden Delicious' apples also indicated that exposure to 1-MCP and CA, as well as storage duration, impacts metabolism of peel constituents. Chlorophyll degradation was delayed in fruit previously exposed to 1-MCP and then stored in CA. Impacts of 1-MCP and storage environment on concentrations of other `Golden Delicious' peel constituents increased with storage duration. The results indicate metabolism of apple fruit peel constituents during fruit ripening is differentially regulated by ethylene.
Abstract from the paper’s OpenAlex record; open copy licensed public-domain. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
Untreated Delicious apples developed brownish discoloration during two months of air storage.
- Taxon
- apples
Malus domesticae0 - Material
- `Delicious'e0
- Outcome
- brownish discoloratione0
- Qualifier
- initial 2 months of storage in aire0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“`Delicious' apples not exposed to 1-MCP developed a brownish discoloration (not superficial scald) during the initial 2 months of storage in air”
Claim · model-written summary
1-MCP and/or controlled atmosphere inhibited degradation of idaein and other flavonoids in apple peel.
- Taxon
- AppleMalus domesticat0
- Treatment
- 1-MCP and/or CAe0
- Outcome
- degradation of compounds responsible for red peel color (i.e., idaein) as well as other flavonoidse0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Apple”
e0“1-MCP and/or CA inhibited the degradation of compounds responsible for red peel color (i.e., idaein) as well as other flavonoids”
Claim · model-written summary
1-MCP or controlled atmosphere did not change epicatechin content.
- Taxon
- AppleMalus domesticat0
- Treatment
- 1-MCP or CAe0
- Outcome
- (-)epicatechin contente0
- Direction
- not impactede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Apple”
e0“The (-)epicatechin content is not impacted by 1-MCP or CA”
Claim · model-written summary
1-MCP and/or controlled atmosphere reduced chlorogenic acid accumulation.
- Taxon
- AppleMalus domesticat0
- Treatment
- 1-MCP and/or stored in CAe0
- Outcome
- chlorogenic acid accumulatione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Apple”
e0“chlorogenic acid accumulation is reduced in fruit exposed to 1-MCP and/or stored in CA”
Claim · model-written summary
Beta-carotene and lutein content in Delicious apple peel stored in air was lower than untreated controls.
- Taxon
- AppleMalus domesticat0
- Material
- `Delicious'e0
- Treatment
- stored in aire0
- Outcome
- β-carotene and lutein contente0
- Direction
- lowere0
- Comparator
- untreated controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“β-carotene and lutein content in peel of `Delicious' fruit stored in air was lower compared with untreated controls”
t0“Apple”
Claim · model-written summary
Air storage after 1-MCP enhanced chlorophyll degradation in apple fruit.
- Taxon
- AppleMalus domesticat0
- Treatment
- air-stored fruit previously exposed to 1-MCPe0
- Outcome
- Chlorophyll degradatione0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Apple”
e0“Chlorophyll degradation was enhanced in air-stored fruit previously exposed to 1-MCP”
Claim · model-written summary
Chlorophyll degradation was delayed in Golden Delicious fruit exposed to 1-MCP and then stored in controlled atmosphere.
- Taxon
- applesMalus domesticae0
- Material
- `Golden Delicious'e0
- Treatment
- exposed to 1-MCP and then stored in CAe0
- Outcome
- Chlorophyll degradatione0
- Direction
- delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results for `Golden Delicious' apples also indicated that exposure to 1-MCP and CA, as well as storage duration, impacts metabolism of peel constituents. Chlorophyll degradation was delayed in fruit previously exposed to 1-MCP and then stored in CA”
Claim · model-written summary
Effects of 1-MCP and storage environment on other Golden Delicious peel constituents increased with storage duration.
- Taxon
- applesMalus domesticae0
- Material
- `Golden Delicious'e0
- Treatment
- 1-MCP and storage environmente0
- Outcome
- concentrations of other `Golden Delicious' peel constituentse0
- Direction
- increasede0
- Qualifier
- with storage duratione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results for `Golden Delicious' apples also indicated that exposure to 1-MCP and CA, as well as storage duration, impacts metabolism of peel constituents. Chlorophyll degradation was delayed in fruit previously exposed to 1-MCP and then stored in CA. Impacts of 1-MCP and storage environment on concentrations of other `Golden Delicious' peel constituents increased with storage duration”
Claim · model-written summary
The authors interpret apple peel metabolism during ripening as differentially regulated by ethylene.
- Taxon
- appleMalus domesticae0
- Outcome
- metabolism of apple fruit peel constituentse0
- Qualifier
- during fruit ripening is differentially regulated by ethylenee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“metabolism of apple fruit peel constituents during fruit ripening is differentially regulated by ethylene”
The same questions in other papers
1-methylcyclopropene · quality: phytochemicals · Malus domestica (apple)Results differ
17 papers in the same direction as this paper · 13 in the opposite direction
- no effect
- no effect
- negative
27 papers more in this group
See all 31 papers →1-methylcyclopropene · molecular: metabolites · Malus domestica (apple)Results differ
14 papers in the same direction as this paper · 37 in the opposite direction
- positive
- positive
- positive
48 papers more in this group
See all 52 papers →1-methylcyclopropene · physiology: pigments · Malus domestica (apple)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
storage · molecular: metabolites · Malus domestica (apple)Positive and negative results
16 papers in the same direction as this paper · 21 in the opposite direction
- positive
- positive
- positive
34 papers more in this group
See all 38 papers →storage · quality: phytochemicals · Malus domestica (apple)Positive and negative results
19 papers in the same direction as this paper · 19 in the opposite direction · 2 reporting no difference from an alternative
- no effect
- negative
- no effect
37 papers more in this group
See all 41 papers →storage · physiology: pigments · 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.