Abstract
Table grape berries are classified as a perishable crop that deteriorates quickly after harvest. The application of melatonin after harvest was found to be effective for retarding senescence and slowing ripening. In the current study, we tested the influence of two melatonin concentrations (50 and 100 µmol) as a postharvest application on quality, bioactive compounds, and enzyme activities of grape berries cv “Crimson” stored at 0 ± 1 °C and 90% relative humidity (RH) for 35 days. Our results indicated that melatonin application extends the shelf-life of berries by reducing weight loss and maintaining total soluble solids (TSS), titratable acidity (TA), berry adherence strength, and firmness. Melatonin treatment also reduced pectin methyl esterase (PME) and polygalactouranase (PG) enzyme activities compared to the control. Moreover, O2•− and H2O2 rates in berries were reduced by high melatonin concentration. Moreover, peroxidase (POD) and catalase (CAT) enzyme activities were increased by melatonin application. Our findings suggested using melatonin postharvest to increase shelf life and maintain quality attributes during refrigerated storage, which could be advantageous on a large scale.
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Claims 6
Claim · model-written summary
Melatonin extended berry shelf life and reduced weight loss.
Not reportedComparator
Verbatim
e0“melatonin application extends the shelf-life of berries by reducing weight loss”
t0“Table Grape”
Claim · model-written summary
Melatonin maintained soluble solids, acidity, adherence strength and firmness.
- Taxon
- grapet0
- Treatment
- melatonine2
- Outcome
- total soluble solids (TSS), titratable acidity (TA), berry adherence strength, and firmnesse0
- Direction
- maintaininge0
Not reportedComparator
Verbatim
e0“maintaining total soluble solids (TSS), titratable acidity (TA), berry adherence strength, and firmness.”
t0“Table Grape”
e2“melatonin application extends the shelf-life of berries by reducing weight loss”
Claim · model-written summary
Melatonin reduced pectin methyl esterase and polygalactouranase activity compared with control.
Verbatim
e0“Melatonin treatment also reduced pectin methyl esterase (PME) and polygalactouranase (PG) enzyme activities compared to the control.”
t0“Table Grape”
Claim · model-written summary
High melatonin concentration reduced O2 and H2O2 rates.
- Taxon
- grapet0
- Treatment
- high melatonin concentratione0
- Outcome
- O2•− and H2O2 rates in berriese0
- Direction
- reducede0
Not reportedComparator
Verbatim
e0“O2•− and H2O2 rates in berries were reduced by high melatonin concentration.”
t0“Table Grape”
Claim · model-written summary
Melatonin increased peroxidase and catalase activity.
- Taxon
- grapet0
- Treatment
- melatonin applicatione0
- Outcome
- peroxidase (POD) and catalase (CAT) enzyme activitiese0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“peroxidase (POD) and catalase (CAT) enzyme activities were increased by melatonin application.”
t0“Table Grape”
Claim · model-written summary
Authors suggested postharvest melatonin to extend shelf life and maintain quality in refrigeration.
Verbatim
e0“using melatonin postharvest to increase shelf life and maintain quality attributes during refrigerated storage”
t0“Table Grape”
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