Abstract
Nonfumigated `Thompson Seedless' table grapes were stored in air or one of four atmospheres: 0.5% O 2 and 35% CO 2 ; 0.5% O 2 and 45% CO 2 ; 0.5% O 2 and 55% CO 2 ; and 100% CO 2 . Grapes were stored at 5C and 20C for 6 and 4.5 days, respectively. The fruit were evaluated for weight loss, berry firmness, soluble solids, titratable acidity, berry shattering, rachis browning, berry browning, and volatiles (acetaldehyde and ethanol). Fruit quality was not affected at 5C; however, at 20C, controlled atmosphere (CA) treatments had a detrimental effect on rachis browning and soluble solids. CA at both temperatures induced the production of high levels of acetaldehyde and ethanol. After treatment at 5C, volatile concentrations were two-thirds lower than at 20C. A consumer taste panel evaluated fruit 3 days after removal from CA. Consumer preference was negatively affected by the CA treatments at 20C; however at 5C, consumer preferencewas not affected by the treatments. Preliminary data for mortality of Omnivorous Leafroller pupae ( Platynota stultana ), Western Flower Thrips adults ( Frankliniella occidentalis ), and Pacific Spider Mite adults ( Tetranychus pacificus ) indicate that many of these treatments would provide quarantine security.
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Claims 9
Claim · model-written summary
Controlled atmospheres did not affect grape fruit quality at 5C.
- Taxon
- grapest0
- Treatment
- controlled atmosphere (CA) treatmentse1
- Outcome
- Fruit qualitye0
- Direction
- not affectede0
- Qualifier
- 5Ce0
Not reportedComparator
Verbatim
e0“Fruit quality was not affected at 5C”
e1“at 20C, controlled atmosphere (CA) treatments had a detrimental effect on rachis browning and soluble solids”
t0“Postharvest Quality of `Thompson Seedless' Grapes after Insecticidal Controlled Atmosphere Treatments”
Claim · model-written summary
At 20C, controlled atmospheres increased rachis browning.
- Taxon
- grapest0
- Treatment
- controlled atmosphere (CA) treatmentse0
- Outcome
- rachis browninge0
- Direction
- detrimental effecte0
- Qualifier
- 20Ce0
Not reportedComparator
Verbatim
e0“at 20C, controlled atmosphere (CA) treatments had a detrimental effect on rachis browning and soluble solids”
t0“Postharvest Quality of `Thompson Seedless' Grapes after Insecticidal Controlled Atmosphere Treatments”
Claim · model-written summary
At 20C, controlled atmospheres detrimentally affected soluble solids.
Not reportedComparatorDirection
Verbatim
e0“at 20C, controlled atmosphere (CA) treatments had a detrimental effect on rachis browning and soluble solids”
t0“Postharvest Quality of `Thompson Seedless' Grapes after Insecticidal Controlled Atmosphere Treatments”
Claim · model-written summary
Controlled atmospheres induced high acetaldehyde production at both temperatures.
Not reportedComparator
Verbatim
e0“CA at both temperatures induced the production of high levels of acetaldehyde and ethanol”
t0“Postharvest Quality of `Thompson Seedless' Grapes after Insecticidal Controlled Atmosphere Treatments”
Claim · model-written summary
Controlled atmospheres induced high ethanol production at both temperatures.
Not reportedComparator
Verbatim
e0“CA at both temperatures induced the production of high levels of acetaldehyde and ethanol”
t0“Postharvest Quality of `Thompson Seedless' Grapes after Insecticidal Controlled Atmosphere Treatments”
Claim · model-written summary
Post-treatment volatile concentrations at 5C were two-thirds lower than at 20C.
Verbatim
e0“After treatment at 5C, volatile concentrations were two-thirds lower than at 20C”
t0“Postharvest Quality of `Thompson Seedless' Grapes after Insecticidal Controlled Atmosphere Treatments”
Claim · model-written summary
At 20C, controlled atmospheres reduced consumer preference.
- Taxon
- grapest0
- Treatment
- CA treatments at 20Ce0
- Outcome
- Consumer preferencee0
- Direction
- negatively affectede0
Not reportedComparator
Verbatim
e0“Consumer preference was negatively affected by the CA treatments at 20C”
t0“Postharvest Quality of `Thompson Seedless' Grapes after Insecticidal Controlled Atmosphere Treatments”
Claim · model-written summary
At 5C, controlled atmospheres did not affect consumer preference.
- Taxon
- grapest0
- Treatment
- the treatmentse0
- Outcome
- consumer preferencee0
- Direction
- not affectede0
- Qualifier
- 5Ce0
Not reportedComparator
Verbatim
e0“at 5C, consumer preferencewas not affected by the treatments”
t0“Postharvest Quality of `Thompson Seedless' Grapes after Insecticidal Controlled Atmosphere Treatments”
Claim · model-written summary
Preliminary mortality data indicate many treatments could provide quarantine security against three arthropod pests.
- Taxon
- grapest0
- Interactor
- Platynota stultana
Platynota stultanae0pest - Second interactor
- Frankliniella occidentalis
Frankliniella occidentalise0pest - Outcome
- quarantine securitye0
- Qualifier
- Tetranychus pacificuse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Preliminary data for mortality of Omnivorous Leafroller pupae ( Platynota stultana ), Western Flower Thrips adults ( Frankliniella occidentalis ), and Pacific Spider Mite adults ( Tetranychus pacificus ) indicate that many of these treatments would provide quarantine security”
t0“Postharvest Quality of `Thompson Seedless' Grapes after Insecticidal Controlled Atmosphere Treatments”
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See all 21 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.