Abstract
A natural lipid, lysophosphatidylethanolamine (LPE), was used as a tomato fruit ripening agent. The effect of this compound on hastening the ripening and on the defoliation of the `Heinz 7155' processing tomato and the Glamour fresh-market tomato (Lycopersicon esculentum Mill.) was compared to the effect of ethephon. Vines were sprayed to runoff in the field with a hand sprayer and fruits were harvested 2 weeks or 20 days later in a single harvest operation. LPE (100 mg liter -1 ) accelerated ripening of both processing and fresh-market tomatoes without defoliation. LPE-treated tomatoes had a better shelf life than the control or ethephon-treated fruit, whether they were harvested at the breaker, pink, or red stage of maturity. The combination of LPE and ethephon (100 mg liter -1 ) enhanced tomato ripening without damaging the foliage, suggesting that LPE can mitigate the undesirable effects of ethephon on foliage and the fruit. The LPE-related lipid phosphatidyldimethylethanol-amine dipalmitoyl (PDED) also was able to enhance some aspects of keeping quality of tomato fruits, but was not able to enhance fruit ripening. Phosphatidylethanolamine was not as effective as LPE or PDED. It appears that the active molecule of this natural lipid is the lyso form. Our results provide evidence that LPE can enhance tomato fruit ripening and postharvest storage life of vine-ripe fruits and fruits picked at early ripeness stages.
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Claims 6
Claim · model-written summary
LPE accelerated ripening of both tomato types without defoliation.
- Taxon
- tomatoes
Solanum lycopersicume0 - Treatment
- LPE (100 mg liter -1 )e0
- Outcome
- ripeninge0
- Direction
- acceleratede0
- Qualifier
- without defoliatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“LPE (100 mg liter -1 ) accelerated ripening of both processing and fresh-market tomatoes without defoliation.”
Claim · model-written summary
LPE-treated tomatoes had better shelf life than controls or ethephon-treated fruit.
- Taxon
- tomatoesSolanum lycopersicume0
- Organ / stage
- breaker, pink, or red stage of maturitye0
- Treatment
- LPE-treatede0
- Outcome
- shelf lifee0
- Direction
- bettere0
- Comparator
- control or ethephon-treated fruite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“LPE-treated tomatoes had a better shelf life than the control or ethephon-treated fruit, whether they were harvested at the breaker, pink, or red stage of maturity.”
Claim · model-written summary
Combined LPE and ethephon enhanced ripening without foliage damage.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- combination of LPE and ethephon (100 mg liter -1 )e0
- Outcome
- tomato ripeninge0
- Direction
- enhancede0
- Qualifier
- without damaging the foliagee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The combination of LPE and ethephon (100 mg liter -1 ) enhanced tomato ripening without damaging the foliage”
Claim · model-written summary
PDED enhanced some tomato fruit keeping qualities.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- phosphatidyldimethylethanol-amine dipalmitoyl (PDED)e0
- Outcome
- keeping quality of tomato fruitse0
- Direction
- enhancee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The LPE-related lipid phosphatidyldimethylethanol-amine dipalmitoyl (PDED) also was able to enhance some aspects of keeping quality of tomato fruits”
Claim · model-written summary
PDED did not enhance tomato fruit ripening.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- PDEDe0
- Outcome
- fruit ripeninge0
- Direction
- not able to enhancee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“(PDED) also was able to enhance some aspects of keeping quality of tomato fruits, but was not able to enhance fruit ripening.”
t0“Tomato”
Claim · model-written summary
Phosphatidylethanolamine was less effective than LPE or PDED.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- Phosphatidylethanolaminee0
- Outcome
- not as effectivee0
- Direction
- not as effectivee0
- Comparator
- LPE or PDEDe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphatidylethanolamine was not as effective as LPE or PDED.”
t0“Tomato”
The same questions in other papers
(2-chloroethyl)phosphonic acid · quality: postharvest · Solanum lycopersicum (tomato)Positive and negative results
20 papers in the same direction as this paper · 3 in the opposite direction
- negative
- no effect
- negative
20 papers more in this group
See all 24 papers →lysophosphatidylethanolamine · quality: postharvest · Solanum lycopersicum (tomato)Results agree
2 papers in the same direction as this paper
- 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.