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This research aimed to evaluate the effects of hexanal and 1-MCP on bitter pit incidence and fruit quality in apples.

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 aimed to evaluate the effects of hexanal and 1-MCP on bitter pit incidence and fruit quality in apples.
Hexanal (0.02%) was sprayed pre-harvest on trees 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 was measured at harvest and during storage.
Control group showed a bitter pit incidence rate of 20.6% at harvest, reduced to 13.2% in the hexanal group.
After 5 months, bitter pit incidence was lower in treated groups (46.6% for hexanal and 47.1% for 1-MCP) compared to control (60.5%).
Polyphenol oxidase activity increased in all treatments, but both hexanal and 1-MCP inhibited this rise compared to control.

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Experiment shows hexanal and 1-MCP treatment reduces bitter pit incidence in apples, indicating better storage outcomes.

Kwon et al. (2025) studied this question.

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