Journal of Berry Research | 2019

Postharvest exogenous melatonin treatment of strawberry reduces postharvest spoilage but affects components of the aroma profile

 
 
 
 
 

Abstract


BACKGROUND: \n \nStrawberries are perishable fruits that decay quickly after harvest, but are valued for their distinctive taste and aroma. Melatonin is involved in plant resistance against stress, plant senescence and fruit ripening, and was shown to delay post-harvest spoilage of strawberries. \n \n \nOBJECTIVE: \n \nThe effects of melatonin postharvest treatment on shelf-life and volatile organic compound profile were assessed in strawberry fruits cv “Luca”. \n \n \nMETHODS: \n \nStrawberry fruit were treated with 100 μM melatonin and stored at 4°C for 12 days to assess whether melatonin treatment could delay spoilage without adversely affecting aroma. \n \n \nRESULTS: \n \nMelatonin treatment delayed fruit deterioration by reducing weight loss and incidence of decay as well as maintaining total soluble solids, titratable acidity, anthocyanin, and taste. Melatonin treatment also significantly reduced CO2 production compared to control fruits. The relative abundance of the majority of volatile organic compounds (VOCs) was not affected, however abundance of two VOCs that are important components of strawberry aroma were affected by melatonin treatment. \n \n \nCONCLUSIONS: \n \nPost-harvest treatment of strawberries with 100 μM melatonin improved strawberry quality and conserved bioactive compounds after 12\u200ad of storage. However, components of the aroma profile were altered in a way which may affect consumer perception of quality.

Volume 9
Pages 297-307
DOI 10.3233/JBR-180361
Language English
Journal Journal of Berry Research

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