Postharvest Exogenous Melatonin Treatment of Table Grape Berry Enhances Quality and Maintains Bioactive Compounds during Refrigerated Storage
Salwa M. El-sayed; Mohamed El-Mogy; Mina Samaan Farag Samaan; Moodi Saham Alsubeie; Doaa Bahaa Eldin Darwish; Samy F. Mahmoud; Dr.Nadi Awad Al-Harbi; salem Alqahtani; Fahad M. Alzuaibr; Hany G. Abd El-Gawad; Nasser, Mohamed; Karim.M.Hassan;
Abstract
Table grape berries are classified as a perishable crop that deteriorates quickly after har-
vest. 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 activ-
ities 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 re-
duced by high melatonin concentration. Moreover, peroxidase (POD) and catalase (CAT) enzyme
activities were increased by melatonin application. Our findings suggested using melatonin post-
harvest to increase shelf life and maintain quality attributes during refrigerated storage, which
could be advantageous on a large scale.
vest. 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 activ-
ities 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 re-
duced by high melatonin concentration. Moreover, peroxidase (POD) and catalase (CAT) enzyme
activities were increased by melatonin application. Our findings suggested using melatonin post-
harvest to increase shelf life and maintain quality attributes during refrigerated storage, which
could be advantageous on a large scale.
Other data
Title | Postharvest Exogenous Melatonin Treatment of Table Grape Berry Enhances Quality and Maintains Bioactive Compounds during Refrigerated Storage | Other Titles | Postharvest Exogenous Melatonin Treatment of Table Grape Berry Enhances Quality and Maintains Bioactive Compounds during Refrigerated Storage | Authors | Salwa M. El-sayed ; Mohamed El-Mogy; Mina Samaan Farag Samaan ; Moodi Saham Alsubeie; Doaa Bahaa Eldin Darwish; Samy F. Mahmoud; Dr.Nadi Awad Al-Harbi; salem Alqahtani; Fahad M. Alzuaibr; Hany G. Abd El-Gawad; Nasser, Mohamed ; Karim.M.Hassan | Keywords | grapes;melatonin;postharvest;antioxidant;quality;SHELF-LIFE;FRUIT;METABOLISM;SENESCENCE;ETHYLENE;ENZYMES | Issue Date | 21-Sep-2022 | Publisher | MDPI | Journal | Horticulturae | Volume | 8 | Issue | 10 | Start page | 1 | End page | 11 | ISSN | 2311-7524 | DOI | 10.3390/horticulturae8100860 | Scopus ID | 2-s2.0-85140598626 | Web of science ID | WOS:000873055000001 |
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