Abstract
Passion fruit deteriorates rapidly after harvest owing to fungal decay and quality loss. This study examined whether acidic electrolyzed water (AEW, pH 2.5) could strengthen host defense responses and thereby prolong the marketable storage period of passion fruit. Freshly harvested yellow passion fruits (without any prior storage) were immersed for 20 min in AEW containing 0 (control), 30, 60 or 90 mg/L available chlorine concentration (ACC) and then packaged in polyethylene film bags and stored at 25 °C for 15 days to simulate typical ambient handling/marketing conditions, where polyethylene packaging is commonly used to maintain a high-humidity microenvironment and reduce moisture loss; physicochemical attributes, decay parameters and disease-resistance-related enzyme activities were then monitored. AEW—particularly at 60 mg/L ACC—significantly lowered decay incidence, disease index and cell membrane permeability while preserving pericarp color (hue angle h, L*) and pulp titratable acidity, vitamin C, total soluble solids, and total soluble sugars. The same treatment elevated the concentrations of disease-resistant metabolites (total polyphenolics, flavonoids and lignin) and up-regulated the activities of peroxidase, cinnamate-4-hydroxylase, 4-coumarate CoA ligase, phenylalanine ammonia-lyase, cinnamyl alcohol dehydrogenase, chitinase, and β-1,3-glucanase. These findings demonstrate that AEW mitigates postharvest deterioration of passion fruit by activating the metabolism of disease-resistant substances, highlighting its potential as an eco-friendly technology for maintaining quality during ambient handling/marketing conditions.
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Claims 8
Claim · model-written summary
AEW at 60 mg/L lowered decay incidence and disease index.
- Taxon
- passion fruit
Passiflora edulist0 - Treatment
- AEW—particularly at 60 mg/L ACCe0
- Outcome
- decay incidence, disease indexe0
- Direction
- lowerede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AEW—particularly at 60 mg/L ACC—significantly lowered decay incidence, disease index”
t0“Yellow Passion Fruit”
Claim · model-written summary
AEW lowered cell membrane permeability.
- Taxon
- passion fruitPassiflora edulist0
- Treatment
- AEW—particularly at 60 mg/L ACCe0
- Outcome
- cell membrane permeabilitye0
- Direction
- lowerede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AEW—particularly at 60 mg/L ACC—significantly lowered decay incidence, disease index and cell membrane permeability”
t0“Yellow Passion Fruit”
Claim · model-written summary
AEW preserved pericarp color.
- Taxon
- passion fruitPassiflora edulist0
- Outcome
- pericarp colore0
- Direction
- preservinge0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“while preserving pericarp color (hue angle h, L*)”
t0“Yellow Passion Fruit”
Claim · model-written summary
AEW preserved pulp acidity, vitamin C, soluble solids and sugars.
- Taxon
- passion fruitPassiflora edulist0
- Outcome
- pulp titratable acidity, vitamin C, total soluble solids, and total soluble sugarse0
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pulp titratable acidity, vitamin C, total soluble solids, and total soluble sugars”
t0“Yellow Passion Fruit”
Claim · model-written summary
AEW elevated polyphenolics, flavonoids and lignin.
- Taxon
- passion fruitPassiflora edulist0
- Treatment
- The same treatmente0
- Outcome
- concentrations of disease-resistant metabolites (total polyphenolics, flavonoids and lignin)e0
- Direction
- elevatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The same treatment elevated the concentrations of disease-resistant metabolites (total polyphenolics, flavonoids and lignin)”
t0“Yellow Passion Fruit”
Claim · model-written summary
AEW increased activities of peroxidase, cinnamate-4-hydroxylase and 4-coumarate CoA ligase.
- Taxon
- passion fruitPassiflora edulist0
- Outcome
- activities of peroxidase, cinnamate-4-hydroxylase, 4-coumarate CoA ligasee0
- Direction
- up-regulatede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“up-regulated the activities of peroxidase, cinnamate-4-hydroxylase, 4-coumarate CoA ligase”
t0“Yellow Passion Fruit”
Claim · model-written summary
AEW increased activities of phenylalanine ammonia-lyase, cinnamyl alcohol dehydrogenase and chitinase.
- Taxon
- passion fruitPassiflora edulist0
- Outcome
- phenylalanine ammonia-lyase, cinnamyl alcohol dehydrogenase, chitinasee0
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“phenylalanine ammonia-lyase, cinnamyl alcohol dehydrogenase, chitinase”
t0“Yellow Passion Fruit”
Claim · model-written summary
AEW increased β-1,3-glucanase activity.
- Taxon
- passion fruitPassiflora edulist0
- Outcome
- β-1,3-glucanasee0
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“β-1,3-glucanase”
t0“Yellow Passion Fruit”