Abstract
Introduction . Kiwifruit is a typical climacteric fruit, which grows profitably well in sub-temperate climatic conditions. The major problem with kiwifruit is that it does not ripen for about a week at room temperature but after this period there is a sudden rise in the respiration rate and fruits remain in edible condition for only a few days, giving it a very short shelf life in ambient conditions. Materials and methods . Kiwifruits were treated with different concentrations of spermine [(0.5, 1.0 and 1.5) mM] and spermidine [(1.0, 1.5 and 2.0) mM] by the immersion method; biochemical and physiological analyses were carried out, then fruit were stored in ambient conditions for 15 days. Results and discussion . Polyamine-treated fruits did not show any amount of ethylene evolution up to the 6th day of storage as compared with those of control, in which it started after the 3rd day of storage. The respiration rate was also the lowest in treated fruit. Similarly, polygalacturonase and lipoxygenase activities rose rapidly in control fruits in comparison with polyamine-treated fruits. Conclusion . The doses of spermine at 1.5 mM and spermidine at 2.0 mM showed the best results in extending the shelf life of kiwifruits when stored in ambient conditions [(22 ± 4) ◦ C, RH: (65 ± 5)%].
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Claims 5
Claim · model-written summary
Polyamine-treated kiwifruit showed no ethylene evolution up to day 6 of storage, whereas control fruit started ethylene evolution after day 3.
- Taxon
- Kiwifruit
Actinidia deliciosae0 - Treatment
- polyaminee1
- Outcome
- ethylene evolutione1
- Qualifier
- up to the 6th day of storagee1
- Comparator
- controle1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Kiwifruit is a typical climacteric fruit”
e1“Polyamine-treated fruits did not show any amount of ethylene evolution up to the 6th day of storage as compared with those of control, in which it started after the 3rd day of storage”
Claim · model-written summary
Polyamine-treated kiwifruit had the lowest respiration rate.
- Taxon
- KiwifruitActinidia deliciosae0
- Treatment
- polyaminee1
- Outcome
- respiration ratee2
- Direction
- the loweste2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Kiwifruit is a typical climacteric fruit”
e1“Polyamine-treated fruits did not show any amount of ethylene evolution up to the 6th day of storage as compared with those of control, in which it started after the 3rd day of storage”
e2“The respiration rate was also the lowest in treated fruit”
Claim · model-written summary
Polygalacturonase and lipoxygenase activities rose rapidly in control kiwifruit, compared with polyamine-treated fruit.
- Taxon
- KiwifruitActinidia deliciosae0
- Treatment
- polyaminee3
- Outcome
- polygalacturonase and lipoxygenase activitiese3
- Direction
- rose rapidlye3
- Comparator
- control fruitse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Kiwifruit is a typical climacteric fruit”
e3“polygalacturonase and lipoxygenase activities rose rapidly in control fruits in comparison with polyamine-treated fruits”
Claim · model-written summary
Spermine at 1.5 mM gave the best results in extending the ambient shelf life of kiwifruit.
- Taxon
- KiwifruitActinidia deliciosae0
- Treatment
- spermine at 1.5 mMe4
- Outcome
- shelf lifee4
- Direction
- the best resultse4
- Setting
- ambient conditionse4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Kiwifruit is a typical climacteric fruit”
e4“The doses of spermine at 1.5 mM and spermidine at 2.0 mM showed the best results in extending the shelf life of kiwifruits when stored in ambient conditions”
Claim · model-written summary
Spermidine at 2.0 mM gave the best results in extending the ambient shelf life of kiwifruit.
- Taxon
- KiwifruitActinidia deliciosae0
- Treatment
- spermidine at 2.0 mMe4
- Outcome
- shelf lifee4
- Direction
- the best resultse4
- Setting
- ambient conditionse4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Kiwifruit is a typical climacteric fruit”
e4“The doses of spermine at 1.5 mM and spermidine at 2.0 mM showed the best results in extending the shelf life of kiwifruits when stored in ambient conditions”
The same questions in other papers
spermine · quality: postharvest · Actinidia deliciosa (kiwifruit)Positive and negative results
1 in the opposite direction
- no effect
spermidine · quality: postharvest · Actinidia deliciosa (kiwifruit)Results agree
1 paper in the same direction as this paper
- 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.