Abstract
The color and polyphenol oxidase (PPO) activity of fresh-cut Golden delicious apples were evaluated throughout cold storage under modified atmospheres. The shelf life of cut apples was extended to several weeks, especially when an initial atmosphere of 90.5% N(2) + 7% CO(2) + 2.5% O(2) and plastic pouches of 30 cm(3)/cm(2) x bar x 24 h were used. Under these conditions, a maximum 62% PPO activity depletion was observed. In all cases, the faster the initial PPO activity decays, the less the color changes. A fractional conversion first-order model was proposed for predicting color changes in minimally processed apples. Browning was better described through lightness (L) (k(L) = 0.017 - 0.07 day(-1)) and color difference (Delta E*) values (k(Delta E) = 0.015 - 0.073 day(-1)), which fitted the model with enough accuracy.
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Claims 6
Claim · model-written summary
Modified atmosphere packaging extended the shelf life of fresh-cut apples to several weeks.
- Taxon
- apples
Malus domesticae2 - Treatment
- an initial atmosphere of 90.5% N(2) + 7% CO(2) + 2.5% O(2)e1
- Outcome
- shelf lifee1
- Direction
- extendede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The shelf life of cut apples was extended to several weeks, especially when an initial atmosphere of 90.5% N(2) + 7% CO(2) + 2.5% O(2) and plastic pouches of 30 cm(3)/cm(2) x bar x 24 h were used”
e2“fresh-cut Golden delicious apples”
Claim · model-written summary
Under the modified atmosphere conditions, PPO activity of fresh-cut apples was depleted by a maximum of 62%.
- Taxon
- applesMalus domesticae2
- Treatment
- an initial atmosphere of 90.5% N(2) + 7% CO(2) + 2.5% O(2)e1
- Outcome
- PPO activitye3
- Direction
- depletione3
- Value
- 62%e3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The shelf life of cut apples was extended to several weeks, especially when an initial atmosphere of 90.5% N(2) + 7% CO(2) + 2.5% O(2) and plastic pouches of 30 cm(3)/cm(2) x bar x 24 h were used”
e2“fresh-cut Golden delicious apples”
e3“Under these conditions, a maximum 62% PPO activity depletion was observed”
Claim · model-written summary
Faster initial decay of PPO activity was associated with less color change in fresh-cut Golden delicious apples.
- Taxon
- applesMalus domesticae2
- Material
- Golden deliciouse2
- Outcome
- color changese4
- Direction
- lesse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“fresh-cut Golden delicious apples”
e4“In all cases, the faster the initial PPO activity decays, the less the color changes”
Claim · model-written summary
A fractional conversion first-order model was proposed for predicting color changes in minimally processed apples.
- Taxon
- applesMalus domesticae2
- Outcome
- predicting color changese5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“fresh-cut Golden delicious apples”
e5“A fractional conversion first-order model was proposed for predicting color changes in minimally processed apples”
Claim · model-written summary
Browning in fresh-cut apples was better described by lightness (L) values, with a rate constant of 0.017 to 0.07 per day, fitting the model with enough accuracy.
- Taxon
- applesMalus domesticae2
- Outcome
- Browninge6
- Value
- k(L) = 0.017 - 0.07 day(-1)e6
- Qualifier
- with enough accuracye6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“fresh-cut Golden delicious apples”
e6“Browning was better described through lightness (L) (k(L) = 0.017 - 0.07 day(-1)) and color difference (Delta E*) values (k(Delta E) = 0.015 - 0.073 day(-1)), which fitted the model with enough accuracy”
Claim · model-written summary
Browning in fresh-cut apples was better described by color difference (Delta E*) values, with a rate constant of 0.015 to 0.073 per day, fitting the model with enough accuracy.
- Taxon
- applesMalus domesticae2
- Outcome
- Browninge6
- Value
- k(Delta E) = 0.015 - 0.073 day(-1)e6
- Qualifier
- with enough accuracye6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“fresh-cut Golden delicious apples”
e6“Browning was better described through lightness (L) (k(L) = 0.017 - 0.07 day(-1)) and color difference (Delta E*) values (k(Delta E) = 0.015 - 0.073 day(-1)), which fitted the model with enough accuracy”
The same questions in other papers
co2 · quality: postharvest · Malus domestica (apple)Positive and negative results
18 papers in the same direction as this paper · 4 in the opposite direction · 1 reporting no difference from an alternative
- negative
- no effect
- no effect
20 papers more in this group
See all 24 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.