Abstract
Abstract Mangoes ( Mangifera indica L.) are notably susceptible to chilling injury (CI) when stored below 13 °C. This temperature threshold is too high for extended storage. Therefore, the influence of postharvest immersion in melatonin (MT) (50, 75, 100 µmol L − 1 ) for 120 min on CI in ‘Kensington Pride’ mangoes kept at 5 ± 1 °C for 21 or 28 d was investigated. The most effective MT concentration was 75 µmol L − 1 causing 36.3% reduction in CI incidence compared to control. To facilitate adoptability in commercial practice, the influence of 120 min vs. 5- and 3-min immersions in 75 µmol L − 1 MT was also tested. The highest efficacy in reducing CI was shown by mangoes immersed in 75 µmol L − 1 MT for 5 min with 52.2% and 38.6% lower CI incidence and CI index, respectively, than the control. This improved chilling tolerance in MT-treated mangoes was achieved through reduced hydrogen peroxide (H 2 O 2 ) radicals, malondialdehyde (MDA) production, relative electrolyte leakage (REL) and lipoxygenase (LOX) activity while higher ascorbic acid (AsA) and glutathione (GSH) levels, and activities of ascorbate peroxidase (APX), glutathione reductase (GR) and monodehydroascorbate reductase (MDHAR). Fruit colour, soluble solids content (SSC), and titratable acidity (TA) were maintained in 75 µmol L − 1 MT treated fruit. MT was effective in reducing CI in mangoes up to 21 d at 5 ± 1 °C. Overall, immersing ‘Kensington Pride’ mangoes in 75 µmol L − 1 MT for 5 min before cold storage (5 ± 1 °C) shows high adoption potential to mitigate CI.
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Claims 9
Claim · model-written summary
A 75 µmol L − 1 melatonin dip reduced mango chilling injury incidence by 36.3%.
- Taxon
- Mangoes
_from_India.jpg?width=60)
Mangifera indicat0 - Treatment
- 75 µmol L − 1e0
- Outcome
- CI incidencee0
- Direction
- reductione0
- Value
- 36.3%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_from_India.jpg?width=500)
Verbatim
e0“The most effective MT concentration was 75 µmol L − 1 causing 36.3% reduction in CI incidence compared to control”
t0“Mangoes”
Claim · model-written summary
A five-minute melatonin dip lowered mango chilling injury incidence by 52.2%.
- Taxon
- mangoesMangifera indicae0
- Treatment
- 75 µmol L − 1 MT for 5 mine0
- Outcome
- CI incidencee0
- Direction
- lowere0
- Value
- 52.2%e0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mangoes immersed in 75 µmol L − 1 MT for 5 min with 52.2% and 38.6% lower CI incidence and CI index, respectively, than the control”
Claim · model-written summary
A five-minute melatonin dip lowered mango chilling injury index by 38.6%.
- Taxon
- mangoesMangifera indicae0
- Treatment
- 75 µmol L − 1 MT for 5 mine0
- Outcome
- CI indexe0
- Direction
- lowere0
- Value
- 38.6%e0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mangoes immersed in 75 µmol L − 1 MT for 5 min with 52.2% and 38.6% lower CI incidence and CI index, respectively, than the control”
Claim · model-written summary
Melatonin-treated mangoes had reduced hydrogen peroxide radicals, malondialdehyde production and electrolyte leakage.
- Taxon
- mangoesMangifera indicae0
- Treatment
- MT-treatede0
- Outcome
- hydrogen peroxide (H 2 O 2 ) radicals, malondialdehyde (MDA) production, relative electrolyte leakage (REL)e0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MT-treated mangoes was achieved through reduced hydrogen peroxide (H 2 O 2 ) radicals, malondialdehyde (MDA) production, relative electrolyte leakage (REL)”
Claim · model-written summary
Melatonin-treated mangoes had reduced lipoxygenase activity.
- Taxon
- mangoesMangifera indicat0
- Treatment
- MT-treatedt1
- Outcome
- lipoxygenase (LOX) activitye0
- Direction
- reducedt1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lipoxygenase (LOX) activity while higher ascorbic acid”
t0“mangoes”
t1“MT-treated mangoes was achieved through reduced”
Claim · model-written summary
Melatonin-treated mangoes had higher ascorbic acid and glutathione levels.
- Taxon
- mangoesMangifera indicat0
- Treatment
- MT-treatedt1
- Outcome
- ascorbic acid (AsA) and glutathione (GSH) levelse0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher ascorbic acid (AsA) and glutathione (GSH) levels”
t0“mangoes”
t1“MT-treated mangoes”
Claim · model-written summary
Melatonin-treated mangoes had higher APX, GR and MDHAR activities.
- Taxon
- mangoesMangifera indicat0
- Treatment
- MT-treatedt1
- Outcome
- activities of ascorbate peroxidase (APX), glutathione reductase (GR) and monodehydroascorbate reductase (MDHAR)e0
- Direction
- highere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“activities of ascorbate peroxidase (APX), glutathione reductase (GR) and monodehydroascorbate reductase (MDHAR)”
t0“mangoes”
t1“MT-treated mangoes”
e1“higher ascorbic acid”
Claim · model-written summary
Fruit colour, soluble solids and titratable acidity were maintained with melatonin.
- Taxon
- mangoesMangifera indicat0
- Treatment
- 75 µmol L − 1 MTe0
- Outcome
- Fruit colour, soluble solids content (SSC), and titratable acidity (TA)e0
- Direction
- maintainede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit colour, soluble solids content (SSC), and titratable acidity (TA) were maintained in 75 µmol L − 1 MT treated fruit”
t0“mangoes”
Claim · model-written summary
Melatonin reduced mango chilling injury up to 21 d at 5 ± 1 °C.
- Taxon
- mangoesMangifera indicae0
- Treatment
- MTe0
- Outcome
- CIe0
- Direction
- reducinge0
- Qualifier
- up to 21 d at 5 ± 1 °Ce0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MT was effective in reducing CI in mangoes up to 21 d at 5 ± 1 °C”
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