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This study proposes the use of cinnamon as an antimicrobial agent with the presence of cinnamic aldehyde, which has antibacterial and antifungal activity and inhibits the production of mycotoxins. Initially, microorganisms were isolated in damaged post-harvest strawberries, isolating colonies of Botritys sp. as the main causal agent of the deterioration of these fruits. The anti-fungal ability of the cinnamon essential oil (Cinnamomum zeynalicum) was evaluated ‘in vitro’ on the development of the isolated fungus, and ‘in vivo’ on fresh fruit at different storage temperatures, times and concentrations of AE. The results obtained showed that the most effective treatments ‘in vivo’ were 250 and 500 ppm of cinnamon essential oil. On-site analyses showed fruit stability in terms of color, texture, flavor, smell, pH and acidity, especially when there is a concentration of 500 ppm of cinnamon essential oil combined with the storage of the fruit at refrigeration temperature (5ºC), this being the most effective treatment to reduce fungal rot and loss of fruit quality. Keywords: cinnamon essential oil, postharvest, strawberry, antifungal activity, preservative. Resumen  Está investigación plantea el uso de la canela como un agente antimicrobiano con la presencia de aldehído cinámico el mismo que posee actividad antibacterial, antifúngica e inhibe la producción de micotoxinas. De manera inicial se asilaron microorganismos en fresa postcosecha deteriorada, aislando colonias de Botritys sp. como el principal agente causal del deterioro de estas frutas. La capacidad antifúngica del aceite esencial de canela (Cinnamomum zeynalicum) fue evaluada ‘in vitro’ sobre el desarrollo del hongo aislado e ‘in vivo’ sobre fruta fresca a diferentes temperaturas de almacenamiento, tiempos y concentraciones de AE. Los resultados obtenidos demostraron que los tratamientos más efectivos ‘in vivo’ fueron 250 y 500 ppm de aceite esencial de canela. Los análisis in situ mostraron estabilidad de los frutos en cuanto a color, textura, sabor, olor, pH y acidez sobre todo cuando se tiene una concentración de 500 ppm de aceite esencial de canela combinado con el almacenamiento de la fruta a temperatura de refrigeración (5ºC) siendo el tratamiento más efectivo para reducir la pudrición fúngica y la pérdida de la calidad de los frutos. Palabras clave: aceite esencial de canela, post cosecha, fresa, actividad antifúngica, conservante.

Evaluation of Cinnamon Essential Oil as a Preservative Agent in the Postharvest Stage of Strawberries (Fragaria Sp.)