Abstract
Experimental vapor heat (VH) tests [43.5C for 5 hours, 1009” relative humidity (RH)] were conducted to determine treatment effects to freshly harvested Florida grapefruit (Citrus paradisi Macf.). VH treatment reduced peel pitting 5-fold compared to control fruit after 5 weeks of storage (4 weeks at 10C + 1 week at 21C) and did not cause peel discoloration or rind breakdown. There was no difference in volume between treated and nontreated fruit after 1 week of storage or in weight loss after 5 weeks. Also, peel color, total soluble solids concentration, acidity, and pH were not affected by VH treatment. Fruit were slightly less firm after VH treatment and remained less firm throughout storage, compared with control fruit. The VH treatment tested is a potentially viable alternative quarantine treatment for control of the Caribbean fruit fly [Anastrepha suspensa (Loew)] because it is not phytotoxic to grapefruit and has been reported effective for disinfestation of this pest in grapefruit.
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Claims 7
Claim · model-written summary
Vapor heat reduced peel pitting fivefold after five weeks of storage.
- Taxon
- grapefruit
_Pompelino_Grapefruit_002.jpg?width=60)
Citrus ×paradisit0 - Treatment
- VH treatmente0
- Outcome
- peel pittinge0
- Direction
- reducede0
- Value
- 5-folde0
- Qualifier
- after 5 weeks of storagee0
- Comparator
- control fruite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Pompelino_Grapefruit_002.jpg?width=500)
Verbatim
e0“VH treatment reduced peel pitting 5-fold compared to control fruit after 5 weeks of storage”
t0“Condition of Florida Grapefruit after Exposure to Vapor Heat Quarantine Treatment”
Claim · model-written summary
Vapor heat caused no peel discoloration or rind breakdown.
- Taxon
- grapefruitCitrus ×paradisit0
- Treatment
- VH treatmente0
- Outcome
- peel discoloration or rind breakdowne0
- Direction
- did not causee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“VH treatment reduced peel pitting 5-fold compared to control fruit after 5 weeks of storage (4 weeks at 10C + 1 week at 21C) and did not cause peel discoloration or rind breakdown”
t0“Condition of Florida Grapefruit after Exposure to Vapor Heat Quarantine Treatment”
Claim · model-written summary
Fruit volume after one week did not differ between heat-treated and untreated fruit.
- Taxon
- grapefruitCitrus ×paradisit0
- Treatment
- treatede0
- Outcome
- volumee0
- Direction
- no differencee0
- Qualifier
- after 1 week of storagee0
- Comparator
- nontreated fruite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no difference in volume between treated and nontreated fruit after 1 week of storage”
t0“Condition of Florida Grapefruit after Exposure to Vapor Heat Quarantine Treatment”
Claim · model-written summary
Weight loss after five weeks did not differ between heat-treated and untreated fruit.
- Taxon
- grapefruitCitrus ×paradisit0
- Treatment
- treatede0
- Outcome
- weight losse0
- Direction
- no differencee0
- Qualifier
- after 5 weekse0
- Comparator
- nontreated fruite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no difference in volume between treated and nontreated fruit after 1 week of storage or in weight loss after 5 weeks”
t0“Condition of Florida Grapefruit after Exposure to Vapor Heat Quarantine Treatment”
Claim · model-written summary
Vapor heat did not affect peel color, soluble solids, acidity or pH.
- Taxon
- grapefruitCitrus ×paradisit0
- Treatment
- VH treatmente0
- Outcome
- peel color, total soluble solids concentration, acidity, and pHe0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“peel color, total soluble solids concentration, acidity, and pH were not affected by VH treatment”
t0“Condition of Florida Grapefruit after Exposure to Vapor Heat Quarantine Treatment”
Claim · model-written summary
Vapor heat lowered fruit firmness throughout storage.
- Taxon
- grapefruitCitrus ×paradisit0
- Treatment
- VH treatmente0
- Outcome
- firme0
- Direction
- less firme0
- Qualifier
- throughout storagee0
- Comparator
- control fruite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit were slightly less firm after VH treatment and remained less firm throughout storage, compared with control fruit”
t0“Condition of Florida Grapefruit after Exposure to Vapor Heat Quarantine Treatment”
Claim · model-written summary
The authors propose vapor heat as a potentially viable grapefruit quarantine treatment.
- Taxon
- grapefruitCitrus ×paradisit0
- Treatment
- VH treatmente0
- Outcome
- potentially viable alternative quarantine treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The VH treatment tested is a potentially viable alternative quarantine treatment for control of the Caribbean fruit fly”
t0“Condition of Florida Grapefruit after Exposure to Vapor Heat Quarantine Treatment”
The same questions in other papers
heat · quality: sugar starch · Citrus x paradisi (grapefruit)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- no effect
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.