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This research aims to assess the effects of hexanal and 1-MCP on bitter pit occurrence and apple quality during cold storage.

December 8, 2025HorticulturaeOpen Access

Effects of Pre-Harvest Hexanal and Post-Harvest 1-Methylcyclopropene Treatments on Bitter Pit Incidence and Fruit Quality in ‘Arisoo’ Apples

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This research aims to assess the effects of hexanal and 1-MCP on bitter pit occurrence and apple quality during cold storage.
Hexanal (0.02%) was applied pre-harvest, and 1-MCP (1 μL·L−1) was applied post-harvest by fumigation.
Apples were stored at 0.5 ± 1 °C for 5 months after treatment.
Incidence and severity of bitter pit were evaluated along with fruit quality parameters during storage.
Control group showed an incidence rate of 20.6% at harvest, while hexanal treatment reduced it to 13.2%.
During storage, bitter pit incidence was 60.5% in controls vs 46.6% in hexanal and 47.1% in 1-MCP treatments after 5 months.
Polyphenol oxidase activity increased in all groups, but treatments inhibited this rise relative to the control.

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Pre-harvest hexanal and post-harvest 1-MCP treatments reduced bitter pit incidence in Arisoo apples, suggesting effective cold storage strategies.

Kwon et al. (2025) studied this question.

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Pre-harvest hexanal and post-harvest 1-MCP treatments reduced bitter pit incidence in Arisoo apples, suggesting effective cold storage strategies.