Articles
Effects of melatonin, carnation oil and SO2 on postharvest storage of pomegranate under modified atmosphere conditions
Article number
1464_10
Pages
69 – 76
Language
English
Abstract
This study was conducted to test the impacts of different postharvest treatments on the storage quality of ‘Wonderful’ pomegranate during 150 days of storage.
Six different treatments were applied: control (no treatment), modified atmosphere packaging (MAP), MAP combined with carnation oil (MAP+Car), MAP combined with melatonin (MAP+Mel), standalone 500 µM melatonin treatment (Melatonin), and SO2 pad application.
Fruits were stored at 6-7°C and 90-95% relative humidity for 150 days.
Quality assessments were performed at 30-day intervals, including weight loss, ascorbic acid content, soluble solids concentration, titratable acidity, decay incidence, and chilling injury.
Results showed that MAP-based treatments significantly reduced weight loss and decay compared to the control.
Among all treatments, MAP+Mel demonstrated the best preservation of ascorbic acid and overall fruit quality, with minimal chilling injury and decay.
SO2 pads were effective in reducing decay but were not effective in reducing chilling injury and maintaining other quality parameters.
The standalone melatonin treatment provided moderate protection but was less effective than when combined with MAP. Overall, the combination of MAP and melatonin emerged as the most promising postharvest strategy for maintaining pomegranate fruit quality during extended cold storage.
Six different treatments were applied: control (no treatment), modified atmosphere packaging (MAP), MAP combined with carnation oil (MAP+Car), MAP combined with melatonin (MAP+Mel), standalone 500 µM melatonin treatment (Melatonin), and SO2 pad application.
Fruits were stored at 6-7°C and 90-95% relative humidity for 150 days.
Quality assessments were performed at 30-day intervals, including weight loss, ascorbic acid content, soluble solids concentration, titratable acidity, decay incidence, and chilling injury.
Results showed that MAP-based treatments significantly reduced weight loss and decay compared to the control.
Among all treatments, MAP+Mel demonstrated the best preservation of ascorbic acid and overall fruit quality, with minimal chilling injury and decay.
SO2 pads were effective in reducing decay but were not effective in reducing chilling injury and maintaining other quality parameters.
The standalone melatonin treatment provided moderate protection but was less effective than when combined with MAP. Overall, the combination of MAP and melatonin emerged as the most promising postharvest strategy for maintaining pomegranate fruit quality during extended cold storage.
Authors
O. Konut, S. Usanmaz, İ. Kahramanoğlu
Keywords
chilling injury, decay control, pomegranate fruit, postharvest storage, essential oil
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