Abstract
The postharvest life of 'Pollock' avocado, a popular cultivar grown in Sri Lanka, is 7-10 d at room temperature. A short postharvest life limits its export volume by sea freight. Materials and methods. Pollock avocado fruit were packaged in 0.05 mm thick low-density polyethylene (LDPE) bags to create a modified atmosphere (MA), and they were stored at 12 o C and 94% relative humidity. The effect of the potassium permanganate, an ethylene absorber, and of the granular charcoal, a carbon dioxide absorber, on modifying the in-package atmosphere was tested. During storage, carbon dioxide, oxygen and ethylene contents were measured. The packages were opened after MA storage, and the fruit ripened naturally under ambient conditions. The weight loss, changes in firmness, total soluble solids (TSS), pulp color, visual quality rating (VQR), chilling injury index (CI) and disease index (DI) during or after storage were determined. Results. Compared with the samples packaged without absorbers, those packaged with absorbers had significantly lower carbon dioxide and ethylene contents. MA packaging was effective in extending the postharvest life of Pollock avocado up to 17 d. Inclusion of absorbers further extended the postharvest life up to 29 d. Firmness, TSS, pulp color, VQR, CI and DI of the ripened fruits were not significantly affected by the MA conditions. Discussion. The MA conditions did not alter the ripening process and were successful in preventing the chilling injury and diseases. Packaging of Pollock avocado in 0.05 mm LDPE bags at 1:1 surface to weight ratio (cm 2 . g -1 ) with ethylene and carbon dioxide absorbers and storing at 12 C and 94% relative humidity can be recommended to extend their storage life up to 29 d. Sri Lanka / Persea americana (fruits) / introduced varieties / keeping quality / controlled atmosphere storage Prolongation de la vie aprs-rcolte de l'avocat 'Pollock' par conditionnement sous atmosphre modifie.
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Claims 6
Claim · model-written summary
Absorbers significantly lowered in-package carbon dioxide and ethylene versus no absorbers.
- Taxon
- avocado
Persea americanat0 - Treatment
- absorberse0
- Outcome
- carbon dioxide and ethylene contentse0
- Direction
- lowere0
- Comparator
- samples packaged without absorberse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with the samples packaged without absorbers, those packaged with absorbers had significantly lower carbon dioxide and ethylene contents.”
t0“avocado”
Claim · model-written summary
Modified atmosphere packaging extended Pollock avocado postharvest life to 17 d.
- Taxon
- Pollock avocadoe0
- Treatment
- MA packaginge0
- Outcome
- postharvest lifee0
- Direction
- extendinge0
- Value
- 17 de0
Not reportedComparator
Verbatim
e0“MA packaging was effective in extending the postharvest life of Pollock avocado up to 17 d.”
Claim · model-written summary
Adding absorbers extended avocado postharvest life to 29 d.
- Taxon
- avocadoPersea americanat0
- Treatment
- absorberse0
- Outcome
- postharvest lifee0
- Direction
- extendede0
- Value
- 29 de0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inclusion of absorbers further extended the postharvest life up to 29 d.”
t0“avocado”
Claim · model-written summary
Modified atmosphere conditions did not significantly affect firmness, soluble solids or pulp color of ripened avocado.
- Taxon
- avocadoPersea americanat0
- Treatment
- MA conditionse0
- Outcome
- Firmness, TSS, pulp colore0
- Direction
- not significantly affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Firmness, TSS, pulp color, VQR, CI and DI of the ripened fruits were not significantly affected by the MA conditions.”
t0“avocado”
Claim · model-written summary
Modified atmosphere conditions did not significantly affect visual quality, chilling injury index or disease index.
- Taxon
- avocadoPersea americanat0
- Treatment
- MA conditionse0
- Outcome
- VQR, CI and DIe0
- Direction
- not significantly affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Firmness, TSS, pulp color, VQR, CI and DI of the ripened fruits were not significantly affected by the MA conditions.”
t0“avocado”
Claim · model-written summary
The authors recommend LDPE bags with ethylene and carbon dioxide absorbers at 12 C and 94% relative humidity to extend storage life to 29 d.
Verbatim
e0“Packaging of Pollock avocado in 0.05 mm LDPE bags at 1:1 surface to weight ratio (cm 2 . g -1 ) with ethylene and carbon dioxide absorbers and storing at 12 C and 94% relative humidity can be recommended to extend their storage life up to 29 d.”
The same questions in other papers
storage · quality: general · Persea americana (avocado)Positive and negative results
2 papers in the same direction as this paper · 5 in the opposite direction
- positive
- positive
- positive
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See all 8 papers →storage · quality: sugar starch · Persea americana (avocado)Results agree
1 paper in the same direction as this paper
- 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.