Abstract
Abstract A new method for analyzing acetaldehyde concentration in apple ( Malus domestica Borkh.) tissues was used to measure its accumulation in senescing fruits. Initially low levels (1 µg/g fresh weight) increased as the fruits ripened, but only at advanced senescence did they reach relatively high levels (14 µg/g fresh weight). Acetaldehyde did not accumulate in advance of tissue disorganization. Watercored ‘Delicious’ apple tissue accumulated significantly more acetaldehyde than tissue of non-watercored fruits during storage, but watercore breakdown did not result. There was no consistent difference in acetaldehyde levels of ethephon-treated and non-treated ‘McIntosh’ apples after long-term storage, although the ethephon-treated fruits developed more senescent breakdown. However, the acetaldehyde level in fruits after breakdown occurred was about 20% higher than that in corresponding sound fruit. Acetaldehyde accumulation appeared to be a consequence of tissue disorganization rather than a cause of senescent breakdown in the fruits.
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Claims 8
Claim · model-written summary
Acetaldehyde rose from 1 µg/g during ripening to 14 µg/g at advanced senescence.
- Taxon
- Apple
Malus domesticat0 - Outcome
- levelse0
- Direction
- increasede0
- Value
- 14 µg/g fresh weighte0
- Qualifier
- 1 µg/g fresh weighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Initially low levels (1 µg/g fresh weight) increased as the fruits ripened, but only at advanced senescence did they reach relatively high levels (14 µg/g fresh weight)”
t0“Apple Fruits”
Claim · model-written summary
Acetaldehyde did not accumulate before tissue disorganization.
- Taxon
- AppleMalus domesticat0
- Outcome
- Acetaldehyde did not accumulatee0
- Direction
- did not accumulatee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Acetaldehyde did not accumulate in advance of tissue disorganization”
t0“Apple Fruits”
Claim · model-written summary
Watercored Delicious tissue accumulated more acetaldehyde than non-watercored tissue during storage.
- Taxon
- appleMalus domesticae0
- Material
- ‘Delicious’e0
- Organ / stage
- tissuee0
- Outcome
- acetaldehydee0
- Direction
- moree0
- Comparator
- non-watercored fruitse0
- Setting
- storagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Watercored ‘Delicious’ apple tissue accumulated significantly more acetaldehyde than tissue of non-watercored fruits during storage”
Claim · model-written summary
Watercore breakdown did not result in watercored Delicious tissue.
- Taxon
- appleMalus domesticae0
- Material
- ‘Delicious’e0
- Outcome
- watercore breakdown did not resulte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Watercored ‘Delicious’ apple tissue accumulated significantly more acetaldehyde than tissue of non-watercored fruits during storage, but watercore breakdown did not result”
Claim · model-written summary
Ethephon treatment produced no consistent acetaldehyde difference in McIntosh apples after storage.
- Taxon
- applesMalus domesticae0
- Material
- ‘McIntosh’e0
- Treatment
- ethephon-treatede0
- Outcome
- acetaldehyde levelse0
- Direction
- no consistent differencee0
- Comparator
- non-treatede0
- Setting
- long-term storagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no consistent difference in acetaldehyde levels of ethephon-treated and non-treated ‘McIntosh’ apples after long-term storage”
Claim · model-written summary
Ethephon-treated McIntosh fruit developed more senescent breakdown.
- Taxon
- applesMalus domesticae0
- Material
- ‘McIntosh’e0
- Treatment
- ethephon-treatede0
- Outcome
- senescent breakdowne0
- Direction
- moree0
- Comparator
- non-treatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ethephon-treated and non-treated ‘McIntosh’ apples after long-term storage, although the ethephon-treated fruits developed more senescent breakdown”
Claim · model-written summary
Acetaldehyde was about 20% higher after breakdown than in sound fruit.
- Taxon
- AppleMalus domesticat0
- Organ / stage
- fruitse0
- Outcome
- acetaldehyde levele0
- Direction
- highere0
- Value
- 20%e0
- Comparator
- corresponding sound fruite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“acetaldehyde level in fruits after breakdown occurred was about 20% higher than that in corresponding sound fruit”
t0“Apple Fruits”
Claim · model-written summary
Authors interpreted acetaldehyde accumulation as a consequence of tissue disorganization.
- Taxon
- AppleMalus domesticat0
- Outcome
- Acetaldehyde accumulatione0
- Qualifier
- tissue disorganizatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Acetaldehyde accumulation appeared to be a consequence of tissue disorganization rather than a cause of senescent breakdown in the fruits”
t0“Apple Fruits”
The same questions in other papers
(2-chloroethyl)phosphonic acid · molecular: metabolites · Malus domestica (apple)Results differ
4 papers in the same direction as this paper · 5 in the opposite direction
- positive
- positive
- positive
6 papers more in this group
See all 10 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.