A mechanistic modelling approach to understand 1-MCP inhibition of ethylene action and quality changes during ripening of apples.

• Autores: Sunny George Gwanpua, B. E. Verlinden, Maarten Latm Hertog, Bart M Nicolaï, Annemie H Geeraerd
• Localización: Journal of the science of food and agriculture, ISSN 0022-5142, Vol. 97, Nº 11, 2017, págs. 3802-3813
• Idioma: inglés
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• Resumen

  • 1-Methylcyclopropene (1-MCP) inhibits ripening in climacteric fruit by blocking ethylene receptors, preventing ethylene from binding and eliciting its action. The objective of the current study was to use mathematical models to describe 1-MCP inhibition of apple fruit ripening, and to provide a tool for predicting ethylene production, and two important quality indicators of apple fruit, firmness and background colour.; Results: A model consisting of coupled differential equations describing 1-MCP inhibition of apple ripening was developed. Data on ethylene production, expression of ethylene receptors, firmness, and background colour during ripening of untreated and 1-MCP treated apples were used to calibrate the model. An overall adjusted R2 of 95% was obtained. The impact of time from harvest to treatment, and harvest maturity on 1-MCP efficacy was modelled. Different hypotheses on the partial response of 'Jonagold' apple to 1-MCP treatment were tested using the model. The model was validated using an independent dataset.; Conclusions: Low 1-MCP blocking efficacy was shown to be the most likely cause of partial response for delayed 1-MCP treatment, and 1-MCP treatment of late-picked apples. Time from harvest to treatment was a more important factor than maturity for 1-MCP efficacy in 'Jonagold' apples. © 2017 Society of Chemical Industry.; © 2017 Society of Chemical Industry.