Abstract
ABSTRACT Two groups of “Flor de Invierno” pears ( Pyrus communis L.), one recently harvested and another stored in a refrigerated controlled atmosphere for 7 months, were studied after storage at 20C in a normal atmosphere. Survival analysis was used to estimate sensory shelf life, which was 29 and 15 days for a 50% rejection probability, or 13 and 7 days for a 25% rejection probability for recently harvested and stored pears, respectively. A consumer panel evaluated the overall acceptability of the pears on a 9‐point hedonic scale. Recently harvested pears obtained higher acceptability scores throughout the 20C storage time. Instrumental firmness measurements were performed with a texture analyzer through a compression test. The results obtained showed that prolonged storage in a controlled atmosphere causes changes in the fruit that lead to lower firmness, lower acceptance scores and, consequently, a shorter sensory shelf life. PRACTICAL APPLICATIONS The use of survival analysis to study the shelf life of foods is quite a novel technique in which the key concept is to focus the shelf life estimation on consumer rejection. In this study, survival analysis was applied to pears, but can be applied to other fruits or foods. This approach is useful to know the adequate storage time of food without detrimental sensory quality changes that would conduct to the consumer rejection. Normally, loss in sensory quality appears before microbiological spoilage in many food, so this methodology could be used to predict sensory shelf life.
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Claims 6
Claim · model-written summary
Controlled-atmosphere storage for 7 months shortened the sensory shelf life of pears at 50% rejection probability, from 29 days (recently harvested) to 15 days.
- Taxon
- Pyrus communis L.
_Poirier_Fleurs_et_feuilles.jpg?width=60)
Pyrus communist0 - Treatment
- stored in a refrigerated controlled atmosphere for 7 monthse0
- Outcome
- sensory shelf lifee1
- Direction
- shortere3
- Value
- 29 and 15 dayse1
- Qualifier
- 50% rejection probabilitye1
- Comparator
- recently harvestede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Poirier_Fleurs_et_feuilles.jpg?width=500)
Verbatim
t0“Pyrus communis L.”
e0“one recently harvested and another stored in a refrigerated controlled atmosphere for 7 months”
e1“Survival analysis was used to estimate sensory shelf life, which was 29 and 15 days for a 50% rejection probability, or 13 and 7 days for a 25% rejection probability for recently harvested and stored pears, respectively”
e3“a shorter sensory shelf life”
Claim · model-written summary
Controlled-atmosphere storage for 7 months shortened the sensory shelf life of pears at 25% rejection probability, from 13 days (recently harvested) to 7 days.
- Taxon
- Pyrus communis L.Pyrus communist0
- Treatment
- stored in a refrigerated controlled atmosphere for 7 monthse0
- Outcome
- sensory shelf lifee1
- Direction
- shortere3
- Value
- 13 and 7 dayse1
- Qualifier
- 25% rejection probabilitye1
- Comparator
- recently harvestede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pyrus communis L.”
e0“one recently harvested and another stored in a refrigerated controlled atmosphere for 7 months”
e1“Survival analysis was used to estimate sensory shelf life, which was 29 and 15 days for a 50% rejection probability, or 13 and 7 days for a 25% rejection probability for recently harvested and stored pears, respectively”
e3“a shorter sensory shelf life”
Claim · model-written summary
Recently harvested pears had higher consumer acceptability scores throughout storage at 20C.
- Taxon
- Pyrus communis L.Pyrus communist0
- Treatment
- 20C storage timee2
- Outcome
- acceptability scorese2
- Direction
- highere2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pyrus communis L.”
e2“Recently harvested pears obtained higher acceptability scores throughout the 20C storage time”
Claim · model-written summary
Prolonged controlled-atmosphere storage lowered the firmness of pears compared with recently harvested fruit.
- Taxon
- Pyrus communis L.Pyrus communist0
- Treatment
- prolonged storage in a controlled atmospheree3
- Outcome
- firmnesse3
- Direction
- lowere3
- Comparator
- recently harvestede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pyrus communis L.”
e0“one recently harvested and another stored in a refrigerated controlled atmosphere for 7 months”
e3“The results obtained showed that prolonged storage in a controlled atmosphere causes changes in the fruit that lead to lower firmness, lower acceptance scores and, consequently, a shorter sensory shelf life”
Claim · model-written summary
Prolonged controlled-atmosphere storage lowered consumer acceptance scores of pears compared with recently harvested fruit.
- Taxon
- Pyrus communis L.Pyrus communist0
- Treatment
- prolonged storage in a controlled atmospheree3
- Outcome
- acceptance scorese3
- Direction
- lowere3
- Comparator
- recently harvestede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pyrus communis L.”
e0“one recently harvested and another stored in a refrigerated controlled atmosphere for 7 months”
e3“The results obtained showed that prolonged storage in a controlled atmosphere causes changes in the fruit that lead to lower firmness, lower acceptance scores and, consequently, a shorter sensory shelf life”
Claim · model-written summary
The survival-analysis approach is useful for finding the adequate storage time of pears without detrimental sensory quality changes.
- Outcome
- adequate storage timee5
PyrusOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“In this study, survival analysis was applied to pears, but can be applied to other fruits or foods”
e5“This approach is useful to know the adequate storage time of food without detrimental sensory quality changes”
The same questions in other papers
storage · quality: postharvest · Pyrus communis (pear)Positive and negative results
1 paper in the same direction as this paper · 20 in the opposite direction
- positive
- positive
- positive
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See all 22 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.