Abstract
This work evaluated the efficacies of different coatings: chitosan, gelatin and chitosan-gelatin applied layer-by-layer (LbL); for maintaining the quality of sweet peppers that were stored for 3 weeks at a sub-optimal temperature (1.5 °C) and at an optimal storage temperature (7 °C). After the cold-storage period, fruits were kept under marketing conditions (21 °C) for 3 more days. An edible chitosan coating (2%) effectively alleviated chilling injury and the incidence of decay, and also preserved the nutritional quality of sweet peppers that were kept for 3 weeks at 1.5 °C plus 3 more days at 21 °C. The chitosan coating was more effective than the two other coatings. All three coating treatments significantly reduced external CO2 production, as compared to uncoated control fruit. Storage temperatures did not significantly affect external CO2 production, although CO2 production was slightly higher at 1.5 °C. The chitosan coating exhibited good CO2 gas permeability properties and the peppers coated with that material had lower respiration rates than those in the other two experimental treatments or the control. From a practical point of view, chitosan coating could replace the plastic bags previously found to alleviate chilling injury in peppers that are stored at 1.5 °C as a quarantine treatment.
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Claims 7
Claim · model-written summary
Edible chitosan coating alleviated chilling injury and decay in sweet peppers stored at 1.5 °C
- Taxon
- sweet peppers
Capsicum annuume0 - Treatment
- An edible chitosan coating (2%)e1
- Outcome
- chilling injury and the incidence of decaye1
- Direction
- alleviatede1
- Qualifier
- stored for 3 weeks at a sub-optimal temperature (1.5 °C)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sweet peppers that were stored for 3 weeks at a sub-optimal temperature (1.5 °C)”
e1“An edible chitosan coating (2%) effectively alleviated chilling injury and the incidence of decay”
Claim · model-written summary
Chitosan coating preserved the nutritional quality of sweet peppers after 3 weeks at 1.5 °C plus 3 days at 21 °C
- Taxon
- sweet peppersCapsicum annuume2
- Treatment
- chitosan coatinge1
- Outcome
- nutritional qualitye2
- Direction
- preservede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sweet peppers that were stored for 3 weeks at a sub-optimal temperature (1.5 °C)”
e1“An edible chitosan coating (2%) effectively alleviated chilling injury and the incidence of decay”
e2“also preserved the nutritional quality of sweet peppers”
Claim · model-written summary
The chitosan coating was more effective than the two other coatings
- Taxon
- sweet peppersCapsicum annuume2
- Treatment
- chitosan coatinge3
- Outcome
- effectivee3
- Direction
- more effectivee3
- Comparator
- the two other coatingse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“also preserved the nutritional quality of sweet peppers”
e3“The chitosan coating was more effective than the two other coatings”
Claim · model-written summary
All three coatings significantly reduced external CO2 production compared with uncoated fruit
- Taxon
- sweet peppersCapsicum annuume2
- Treatment
- All three coating treatmentse4
- Outcome
- external CO2 productione4
- Direction
- reducede4
- Comparator
- uncoated control fruite4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“also preserved the nutritional quality of sweet peppers”
e4“All three coating treatments significantly reduced external CO2 production, as compared to uncoated control fruit”
Claim · model-written summary
Storage temperature did not significantly affect external CO2 production
- Taxon
- sweet peppersCapsicum annuume2
- Treatment
- Storage temperaturese5
- Outcome
- external CO2 productione5
- Direction
- did not significantly affecte5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“also preserved the nutritional quality of sweet peppers”
e5“Storage temperatures did not significantly affect external CO2 production”
Claim · model-written summary
Chitosan-coated peppers had lower respiration rates than the other coatings or the control
- Taxon
- sweet peppersCapsicum annuume2
- Treatment
- chitosan coatinge1
- Outcome
- respiration ratese6
- Direction
- lowere6
- Comparator
- those in the other two experimental treatments or the controle6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“An edible chitosan coating (2%) effectively alleviated chilling injury and the incidence of decay”
e2“also preserved the nutritional quality of sweet peppers”
e6“the peppers coated with that material had lower respiration rates than those in the other two experimental treatments or the control”
Claim · model-written summary
Chitosan coating could replace plastic bags for alleviating chilling injury in quarantine storage of peppers
- Outcome
- replace the plastic bagse7
CapsicumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“chitosan coating could replace the plastic bags previously found to alleviate chilling injury in peppers”
The same questions in other papers
chitosan · crop injury · Capsicum annuum (sweet pepper)Results agree
1 paper in the same direction as this paper
- positive
chitosan · physiology: respiration · Capsicum annuum (sweet pepper)Results agree
1 paper in the same direction as this paper
- positive
storage · quality: grain · Capsicum annuum (sweet pepper)Positive and negative results
2 papers in the same direction as this paper · 1 reporting no difference from an alternative
- no effect
- positive
- positive
storage · crop injury · Capsicum annuum (sweet pepper)Positive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction
- positive
- positive
- no effect
3 papers more in this group
See all 7 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.