The aim of this study was to investigate the effect of 1-methylcycloprane (1-MCP) on apple VOC production during postharvest ripening. To dissect the effects of ethylene on the regulation of the general VOC production, two apple cultivars with a distinct ripening behaviour were selected, namely ‘Golden Delicious’ and ‘Fuji’. Apple VOC content, including ethylene, was assessed by PTR-ToF-MS over 3 weeks of storage at room temperature and after 2 months of storage at 2 °C, respectively. The production of VOCs resulted inhibited by the application of 1-MCP in both apple cultivars, while in non-treated apples a correlation with the ripening progression was observed, confirming the chief role of ethylene in the control of VOC synthesis.
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